Compare SIM Only Deals

All of the UK's top deals from the major UK networks plus some smaller networks which offer great affordability and flexibility.

Apply a filter such as length or network to find the right contract for you.

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Contract Length
Network
Data
three logo
Three SIM Only
Unlimited Data
12 Month Contract
£27
a month
Unlimited
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 30GB Wifi Hotspot

Free Roaming In 71 Countries

Use popular apps without using your data.

  • Stream your favourite shows and music infinitely without using up your data
  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Use your phone abroad in 71 destinations at no extra cost
  • One month SIM also available
three logo
Three SIM Only
Unlimited Data
1 Month SIM
£32
a month
Unlimited
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 1GB Wifi Hotspot

Rolling Contract

  • Flexible 1 month plan - You can choose to cancel after one month or carry on using it.
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
giffgaff logo
giffgaff SIM Only
Always On* Data
1 Month SIM
£25
a month
Always On*
data
Unlimited
minutes
Unlimited
texts
No Credit Check
More Info
Check Coverage
At Your Postcode

Rolling Contract

No Credit Check Required

Access O2 Free Wifi Hotspots

  • Earn points when you refer-a-friend or help out on the giffgaff forums or suggest ideas
  • Cash in your points to convert them to cash, credit or a donation to charity
  • Roam for free in the EU and selected countires
  • When roaming you'll be charged 0.6p/MB after you've used the first 20GB
  • *Although you can use unlimited data, once you've used 20GB you'll experience a reduced data speed of 384kbps between 8am and midnight
three logo
Three SIM Only
100GB Data
12 Month Contract
£20
a month
100GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 30GB Wifi Hotspot

Free Roaming In 71 Countries

Use popular apps without using your data.

  • Stream your favourite shows and music infinitely without using up your data
  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
  • One month SIM also available
ee logo
EE SIM Only
60GB Data
12 Month Contract
£30
a month
60GB
data
Unlimited
minutes
Unlimited
texts
£100 Gift Card
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
o2 logo
O2 SIM Only
50GB Data
12 Month Contract
£30
a month
50GB
data
Unlimited
minutes
Unlimited
texts
6 Months Free Netflix
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

Free Roaming In 75 Countries

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in 75 destinations including the USA. See the full list of destinations here
voxi logo
Voxi SIM Only
45GB Data
1 Month SIM
£20
a month
45GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 31st March
More Info
Check Coverage
At Your Postcode

Endless Social Media

Rolling Contract

No Credit Check Required

  • Endless social media use - Unlimited data on Snapchat, Instagram, WhatsApp, Facebook, Twitter, Pinterest, Viber and Facebook Messenger
  • Refer a friend and you both get a £10 Amazon voucher
  • Use in Europe for no extra cost
  • Powered by Vodafone
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
vodafone logo
Vodafone SIM Only
45GB Data
12 Month Contract
£31
a month
45GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

12 Mo Free Entertainment

3 Mo Free Security

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • Choice of streaming service for one year - Sky Sports mobile, Now TV, Spotify or Prime Video
  • 3-month free trial of Vodafone Secure Net
  • Pay no roaming charges in 77 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
vodafone logo
Vodafone SIM Only
40GB Data
12 Month Contract
£24
a month
40GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

Free Roaming in 48 Countries

3 Mo Free Security

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • 3-month free trial of Vodafone Secure Net
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
ee logo
EE SIM Only
40GB Data
12 Month Contract
£25
a month
40GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
bt logo
BT SIM Only
40GB Data
12 Month Contract
£30
a month
40GB
data
Unlimited
minutes
Unlimited
texts
£90 BT Reward Card
More Info
Check Coverage
At Your Postcode

£5 off for BT Broadband Customers

Access 5 million Free BT Wi-fi Hotspots

Get free BT Sport on your mobile

  • Claim a free prepaid Mastercard worth £90 - Can be claimed 30 days after purchase
  • Free access to over 5 million UK BT wi-fi hotspots available all over the UK
  • 30 day money back guarantee on everything included in your plan
  • Use the BT Sport App for free on your mobile phone
vodafone logo
Vodafone SIM Only
40GB Data
1 Month SIM
£37
a month
40GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

3 Mo Free Security

Free Roaming in 48 Countries

  • 1 Month Deal - You can move to a different network or plan whenever you like
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
vodafone logo
Vodafone SIM Only
10GB Data
1 Month SIM
£22
a month
10GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

3 Mo Free Security

Free Roaming in 48 Countries

  • 1 Month Deal - You can move to a different network or plan whenever you like
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
three logo
Three SIM Only
30GB Data
12 Month Contract
£17
a month
30GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 30GB Wifi Hotspot

Free Roaming In 71 Countries

Use popular apps without using your data.

  • Stream your favourite shows and music infinitely without using up your data
  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
  • One month SIM also available
three logo
Three SIM Only
30GB Data
1 Month SIM
£22
a month
30GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 1GB Wifi Hotspot

Rolling Contract

  • Flexible 1 month plan - You can choose to cancel after one month or carry on using it.
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
vodafone logo
Vodafone SIM Only
30GB Data
1 Month SIM
£32
a month
30GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

3 Mo Free Security

Free Roaming in 48 Countries

  • 1 Month Deal - You can move to a different network or plan whenever you like
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
vodafone logo
Vodafone SIM Only
25GB Data
12 Month Contract
£27
a month
25GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

12 Mo Free Entertainment

3 Mo Free Security

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • Choice of streaming service for one year - Sky Sports mobile, Now TV, Spotify or Prime Video
  • 3-month free trial of Vodafone Secure Net
  • Pay no roaming charges in 77 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
ee logo
EE SIM Only
25GB Data
12 Month Contract
£20
a month
25GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
o2 logo
O2 SIM Only
25GB Data
12 Month Contract
£25
a month
25GB
data
Unlimited
minutes
Unlimited
texts
6 Months Free Netflix
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

Free Roaming In 75 Countries

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in 75 destinations including the USA. See the full list of destinations here
o2 logo
O2 SIM Only
20GB Data
12 Month Contract
£20
a month
20GB
data
Unlimited
minutes
Unlimited
texts
6 Months Free Netflix
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

Free Roaming In 75 Countries

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in 75 destinations including the USA. See the full list of destinations here
vodafone logo
Vodafone SIM Only
20GB Data
12 Month Contract
£20
a month
20GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

Free Roaming in 48 Countries

3 Mo Free Security

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • 3-month free trial of Vodafone Secure Net
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
id logo
iD Mobile SIM Only
20GB Data
1 Month SIM
£20
a month
20GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
giffgaff logo
giffgaff SIM Only
20GB Data
1 Month SIM
£20
a month
20GB
data
Unlimited
minutes
Unlimited
texts
No Credit Check
More Info
Check Coverage
At Your Postcode

Rolling Contract

No Credit Check Required

Access O2 Free Wifi Hotspots

  • Earn points when you refer-a-friend or help out on the giffgaff forums or suggest ideas
  • Cash in your points to convert them to cash, credit or a donation to charity
  • Roam for free in the EU and selected countires
  • No contract - Cancel any time
  • Start your next plan early if you run out of data or minutes - or use the standard giffgaff PAYG rates
vodafone logo
Vodafone SIM Only
20GB Data
1 Month SIM
£27
a month
20GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

3 Mo Free Security

Free Roaming in 48 Countries

  • 1 Month Deal - You can move to a different network or plan whenever you like
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
ee logo
EE SIM Only
20GB Data
1 Month SIM
£28
a month
20GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
voxi logo
Voxi SIM Only
15GB Data
1 Month SIM
£15
a month
15GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 31st March
More Info
Check Coverage
At Your Postcode

Endless Social Media

Rolling Contract

No Credit Check Required

  • Endless social media use - Unlimited data on Snapchat, Instagram, WhatsApp, Facebook, Twitter, Pinterest, Viber and Facebook Messenger
  • Refer a friend and you both get a £10 Amazon voucher
  • Use in Europe for no extra cost
  • Powered by Vodafone
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
sky logo
Sky SIM Only
15GB Data
12 Month Contract
£20
a month
15GB
data
Unlimited
minutes
Unlimited
texts
Sky TV Exclusive
More Info
Check Coverage
At Your Postcode

Sky TV Customers: Unlimited Calls and Texts

Roll Over Unused Data

  • Roll over unused data at the end of each month and store it for up to three years.
  • EU Roaming at no extra charge
  • Sky TV customers can access free unlimited calls and texts
bt logo
BT SIM Only
15GB Data
12 Month Contract
£23
a month
15GB
data
Unlimited
minutes
Unlimited
texts
£70 BT Reward Card
More Info
Check Coverage
At Your Postcode

£5 off for BT Broadband Customers

Access 5 million Free BT Wi-fi Hotspots

Get free BT Sport on your mobile

  • Claim a free prepaid Mastercard worth £70 - Can be claimed 30 days after purchase
  • Free access to over 5 million UK BT wi-fi hotspots available all over the UK
  • 30 day money back guarantee on everything included in your plan
  • Use the BT Sport App for free on your mobile phone
vodafone logo
Vodafone SIM Only
15GB Data
12 Month Contract
£24
a month
15GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

12 Mo Free Entertainment

3 Mo Free Security

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • Choice of streaming service for one year - Sky Sports mobile, Now TV, Spotify or Prime Video
  • 3-month free trial of Vodafone Secure Net
  • Pay no roaming charges in 77 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
three logo
Three SIM Only
12GB Data
12 Month Contract
£15
a month
12GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 12GB Wifi Hotspot

Free Roaming In 71 Countries

Use popular apps without using your data.

  • Stream your favourite shows and music infinitely without using up your data
  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
  • One month SIM also available
o2 logo
O2 SIM Only
12GB Data
12 Month Contract
£18
a month
12GB
data
Unlimited
minutes
Unlimited
texts
6 Months Free Netflix
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

Free Roaming In 75 Countries

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in 75 destinations including the USA. See the full list of destinations here
bt logo
BT SIM Only
12GB Data
12 Month Contract
£20
a month
12GB
data
Unlimited
minutes
Unlimited
texts
£70 BT Reward Card
More Info
Check Coverage
At Your Postcode

£5 off for BT Broadband Customers

Access 5 million Free BT Wi-fi Hotspots

Get free BT Sport on your mobile

  • Claim a free prepaid Mastercard worth £70 - Can be claimed 30 days after purchase
  • Free access to over 5 million UK BT wi-fi hotspots available all over the UK
  • 30 day money back guarantee on everything included in your plan
  • Use the BT Sport App for free on your mobile phone
three logo
Three SIM Only
12GB Data
1 Month SIM
£23
a month
12GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 1GB Wifi Hotspot

Rolling Contract

  • Flexible 1 month plan - You can choose to cancel after one month or carry on using it.
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
id logo
iD Mobile SIM Only
10GB Data
1 Month SIM
£15
a month
10GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
o2 logo
O2 SIM Only
10GB Data
12 Month Contract
£17
a month
10GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
vodafone logo
Vodafone SIM Only
10GB Data
12 Month Contract
£17
a month
10GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

Free Roaming in 48 Countries

3 Mo Free Security

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • 3-month free trial of Vodafone Secure Net
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
vodafone logo
Vodafone SIM Only
10GB Data
12 Month Contract
£22
a month
10GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

12 Mo Free Entertainment

3 Mo Free Security

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • Choice of streaming service for one year - Sky Sports mobile, Now TV, Spotify or Prime Video
  • 3-month free trial of Vodafone Secure Net
  • Pay no roaming charges in 77 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
ee logo
EE SIM Only
10GB Data
1 Month SIM
£23
a month
10GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
o2 logo
O2 SIM Only
10GB Data
1 Month SIM
£28
a month
10GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
id logo
iD Mobile SIM Only
8GB Data
1 Month SIM
£12.5
a month
8GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
three logo
Three SIM Only
8GB Data
12 Month Contract
£14
a month
8GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 8GB Wifi Hotspot

Free Roaming In 71 Countries

  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
  • One month SIM also available
plusnet logo
plusnet SIM Only
8GB Data
12 Month Contract
£15
a month
8GB
data
Unlimited
minutes
Unlimited
texts
Plusnet Customer Exclusive
More Info
Check Coverage
At Your Postcode

Plusnet Braodband Customer Exclusive

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Offer only for existing Plusnet Broadband customers
  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
smarty logo
Smarty SIM Only
8GB Data
1 Month SIM
£15
a month
8GB
data
Unlimited
minutes
Unlimited
texts
No Credit Check
2 Months Free
More Info
Check Coverage
At Your Postcode

Get Back Unused Credit

Rolling Contract

No Credit Check Required

  • Get a discount on unused data - £1.25 off your next bill for each unused GB of data
  • Refer a friend and you both get a free month
  • Use in Europe for no extra cost
  • Powered by Three
  • Simple and flexible SIM only deal - Change whenever you like at no extra cost
sky logo
Sky SIM Only
8GB Data
12 Month Contract
£15
a month
8GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Sky TV Customers: Unlimited Calls and Texts

Roll Over Unused Data

  • Roll over unused data at the end of each month and store it for up to three years.
  • EU Roaming at no extra charge
  • Sky TV customers can access free unlimited calls and texts
giffgaff logo
giffgaff SIM Only
8GB Data
1 Month SIM
£15
a month
8GB
data
Unlimited
minutes
Unlimited
texts
No Credit Check
More Info
Check Coverage
At Your Postcode

Rolling Contract

No Credit Check Required

Access O2 Free Wifi Hotspots

  • Earn points when you refer-a-friend or help out on the giffgaff forums or suggest ideas
  • Cash in your points to convert them to cash, credit or a donation to charity
  • Roam for free in the EU and selected countires
  • No contract - Cancel any time
  • Start your next plan early if you run out of data or minutes - or use the standard giffgaff PAYG rates
voxi logo
Voxi SIM Only
6GB Data
1 Month SIM
£10
a month
6GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 31st March
More Info
Check Coverage
At Your Postcode

Endless Social Media

Rolling Contract

No Credit Check Required

  • Endless social media use - Unlimited data on Snapchat, Instagram, WhatsApp, Facebook, Twitter, Pinterest, Viber and Facebook Messenger
  • Refer a friend and you both get a £10 Amazon voucher
  • Use in Europe for no extra cost
  • Powered by Vodafone/li>
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
plusnet logo
plusnet SIM Only
6GB Data
12 Month Contract
£12.5
a month
6GB
data
Unlimited
minutes
Unlimited
texts
Plusnet Customer Exclusive
More Info
Check Coverage
At Your Postcode

Plusnet Braodband Customer Exclusive

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Offer only for existing Plusnet Broadband customers
  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
o2 logo
O2 SIM Only
6GB Data
12 Month Contract
£15
a month
6GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
o2 logo
O2 SIM Only
6GB Data
1 Month SIM
£24
a month
6GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
plusnet logo
plusnet SIM Only
5.5GB Data
12 Month Contract
£12
a month
5.5GB
data
Unlimited
minutes
Unlimited
texts
£50 Plusnet Reward Card
Plusnet Customer Exclusive
More Info
Check Coverage
At Your Postcode

Plusnet Braodband Customer Exclusive

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Offer only for existing Plusnet Broadband customers
  • Claim a free prepaid Mastercard worth £50 - Can be claimed 30 days after purchase
  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
id logo
iD Mobile SIM Only
5GB Data
1 Month SIM
£10
a month
5GB
data
500
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
id logo
iD Mobile SIM Only
5GB Data
1 Month SIM
£11
a month
5GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
plusnet logo
plusnet SIM Only
5GB Data
12 Month Contract
£12
a month
5GB
data
Unlimited
minutes
Unlimited
texts
£50 Plusnet Reward Card
More Info
Check Coverage
At Your Postcode

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Claim a free prepaid Mastercard worth £50 - Can be claimed 30 days after purchase
  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
vodafone logo
Vodafone SIM Only
5GB Data
12 Month Contract
£15
a month
5GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

Free Roaming in 48 Countries

3 Mo Free Security

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • 3-month free trial of Vodafone Secure Net
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
three logo
Three SIM Only
4GB Data
12 Month Contract
£9
a month
4GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 4GB Wifi Hotspot

Free Roaming In 71 Countries

  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
  • One month SIM also available
plusnet logo
plusnet SIM Only
4GB Data
12 Month Contract
£10
a month
4GB
data
Unlimited
minutes
Unlimited
texts
Plusnet Customer Exclusive
More Info
Check Coverage
At Your Postcode

Plusnet Braodband Customer Exclusive

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Offer only for existing Plusnet Broadband customers
  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
smarty logo
Smarty SIM Only
4GB Data
1 Month SIM
£10
a month
4GB
data
Unlimited
minutes
Unlimited
texts
No Credit Check
2 Months Free
More Info
Check Coverage
At Your Postcode

Get Back Unused Credit

Rolling Contract

No Credit Check Required

  • Get a discount on unused data - £1.25 off your next bill for each unused GB of data
  • Refer a friend and you both get a free month
  • Use in Europe for no extra cost
  • Powered by Three
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
giffgaff logo
giffgaff SIM Only
4GB Data
1 Month SIM
£12
a month
4GB
data
Unlimited
minutes
Unlimited
texts
No Credit Check
More Info
Check Coverage
At Your Postcode

Rolling Contract

No Credit Check Required

Access O2 Free Wifi Hotspots

  • Earn points when you refer-a-friend or help out on the giffgaff forums or suggest ideas
  • Cash in your points to convert them to cash, credit or a donation to charity
  • Roam for free in the EU and selected countires
  • No contract - Cancel any time
  • Start your next plan early if you run out of data or minutes - or use the standard giffgaff PAYG rates
bt logo
BT SIM Only
4GB Data
12 Month Contract
£15
a month
4GB
data
Unlimited
minutes
Unlimited
texts
£50 BT Reward Card
More Info
Check Coverage
At Your Postcode

£5 off for BT Broadband Customers

Access 5 million Free BT Wi-fi Hotspots

  • Claim a free prepaid Mastercard worth £50 - Can be claimed 30 days after purchase
  • Free access to over 5 million UK BT wi-fi hotspots available all over the UK
  • 30 day money back guarantee on everything included in your plan
plusnet logo
plusnet SIM Only
4GB Data
12 Month Contract
£15
a month
4GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
three logo
Three SIM Only
4GB Data
1 Month SIM
£16
a month
4GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 1GB Wifi Hotspot

Rolling Contract

  • Flexible 1 month plan - You can choose to cancel after one month or carry on using it.
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
ee logo
EE SIM Only
4GB Data
1 Month SIM
£20
a month
4GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
plusnet logo
plusnet SIM Only
3GB Data
12 Month Contract
£8
a month
3GB
data
2000
minutes
Unlimited
texts
Plusnet Customer Exclusive
More Info
Check Coverage
At Your Postcode

Plusnet Braodband Customer Exclusive

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Offer only for existing Plusnet Broadband customers
  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
id logo
iD Mobile SIM Only
3GB Data
1 Month SIM
£8
a month
3GB
data
500
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
id logo
iD Mobile SIM Only
3GB Data
1 Month SIM
£9
a month
3GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
giffgaff logo
giffgaff SIM Only
3GB Data
1 Month SIM
£10
a month
3GB
data
Unlimited
minutes
Unlimited
texts
No Credit Check
More Info
Check Coverage
At Your Postcode

Rolling Contract

No Credit Check Required

Access O2 Free Wifi Hotspots

  • Earn points when you refer-a-friend or help out on the giffgaff forums or suggest ideas
  • Cash in your points to convert them to cash, credit or a donation to charity
  • Roam for free in the EU and selected countires
  • No contract - Cancel any time
  • Start your next plan early if you run out of data or minutes - or use the standard giffgaff PAYG rates
plusnet logo
plusnet SIM Only
3GB Data
12 Month Contract
£12.5
a month
3GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
ee logo
EE SIM Only
3GB Data
12 Month Contract
£17
a month
3GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
o2 logo
O2 SIM Only
3GB Data
1 Month SIM
£21
a month
3GB
data
1000
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
smarty logo
Smarty SIM Only
2GB Data
1 Month SIM
£7.5
a month
2GB
data
Unlimited
minutes
Unlimited
texts
No Credit Check
2 Months Free
More Info
Check Coverage
At Your Postcode

Get Back Unused Credit

Rolling Contract

No Credit Check Required

  • Get a discount on unused data - £1.25 off your next bill for each unused GB of data
  • Refer a friend and you both get a free month
  • Use in Europe for no extra cost
  • Powered by Three
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
giffgaff logo
giffgaff SIM Only
2GB Data
1 Month SIM
£7.5
a month
2GB
data
250
minutes
Unlimited
texts
No Credit Check
More Info
Check Coverage
At Your Postcode

Rolling Contract

No Credit Check Required

Access O2 Free Wifi Hotspots

  • Earn points when you refer-a-friend or help out on the giffgaff forums or suggest ideas
  • Cash in your points to convert them to cash, credit or a donation to charity
  • Roam for free in the EU and selected countires
  • No contract - Cancel any time
  • Start your next plan early if you run out of data or minutes - or use the standard giffgaff PAYG rates
plusnet logo
plusnet SIM Only
2GB Data
12 Month Contract
£6.5
a month
2GB
data
Unlimited
minutes
Unlimited
texts
£20 Plusnet Reward Card
Plusnet Customer Exclusive
More Info
Check Coverage
At Your Postcode

Plusnet Braodband Customer Exclusive

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Offer only for existing Plusnet Broadband customers
  • Claim a free prepaid Mastercard worth £20 - Can be claimed 30 days after purchase
  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
plusnet logo
plusnet SIM Only
2GB Data
12 Month Contract
£10
a month
2GB
data
1500
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
o2 logo
O2 SIM Only
2GB Data
12 Month Contract
£12
a month
2GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
sky logo
Sky SIM Only
2GB Data
12 Month Contract
£12
a month
2GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Sky TV Customers: Unlimited Calls and Texts

Roll Over Unused Data

  • Roll over unused data at the end of each month and store it for up to three years.
  • EU Roaming at no extra charge
  • Sky TV customers can access free unlimited calls and texts
vodafone logo
Vodafone SIM Only
2GB Data
12 Month Contract
£13
a month
2GB
data
1000
minutes
Unlimited
texts
Offer Ends 19th Dec
More Info
Check Coverage
At Your Postcode

Phone Upgrade After 3 Months

Free Roaming in 48 Countries

  • Upgrade to a new phone after only 3 months, with no hidden charges or penalties. Ideal to get great-value data, minutes and texts while you wait for the latest phone
  • Pay no roaming charges in 48 destinations worldwide, including the USA, Australia and Canada – that’s more than any other UK network!
smarty logo
Smarty SIM Only
1GB Data
1 Month SIM
£6.25
a month
1GB
data
Unlimited
minutes
Unlimited
texts
No Credit Check
2 Months Free
More Info
Check Coverage
At Your Postcode

Get Back Unused Credit

Rolling Contract

No Credit Check Required

  • Get a discount on unused data - £1.25 off your next bill for each unused GB of data
  • Refer a friend and you both get a free month
  • Use in Europe for no extra cost
  • Powered by Three
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
plusnet logo
plusnet SIM Only
1.5GB Data
12 Month Contract
£6
a month
1.5GB
data
500
minutes
500
texts
Plusnet Customer Exclusive
More Info
Check Coverage
At Your Postcode

Plusnet Braodband Customer Exclusive

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Offer only for existing Plusnet Broadband customers
  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
id logo
iD Mobile SIM Only
1GB Data
1 Month SIM
£5
a month
1GB
data
500
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
id logo
iD Mobile SIM Only
1GB Data
1 Month SIM
£6
a month
1GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
sky logo
Sky SIM Only
1GB Data
12 Month Contract
£6
a month
1GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Sky TV Customers: Unlimited Calls and Texts

Roll Over Unused Data

  • Roll over unused data at the end of each month and store it for up to three years.
  • EU Roaming at no extra charge
  • Sky TV customers can access free unlimited calls and texts
plusnet logo
plusnet SIM Only
1GB Data
12 Month Contract
£8
a month
1GB
data
1000
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
three logo
Three SIM Only
1GB Data
12 Month Contract
£10
a month
1GB
data
600
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 1GB Wifi Hotspot

Free Roaming In 71 Countries

  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
  • One month SIM also available
o2 logo
O2 SIM Only
1GB Data
12 Month Contract
£10
a month
1GB
data
1000
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
ee logo
EE SIM Only
1GB Data
12 Month Contract
£14
a month
1GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
three logo
Three SIM Only
1GB Data
1 Month SIM
£15
a month
1GB
data
600
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 1GB Wifi Hotspot

Rolling Contract

  • Flexible 1 month plan - You can choose to cancel after one month or carry on using it.
  • Go Roam Around the World in 71 destinations, at no extra cost - More Details
ee logo
EE SIM Only
1GB Data
1 Month SIM
£17
a month
1GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.
o2 logo
O2 SIM Only
1GB Data
1 Month SIM
£18
a month
1GB
data
500
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
plusnet logo
plusnet SIM Only
1.5GB Data
12 Month Contract
£6.5
a month
1.5GB
data
Unlimited
minutes
Unlimited
texts
£20 Plusnet Reward Card
More Info
Check Coverage
At Your Postcode

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
id logo
iD Mobile SIM Only
500MB Data
1 Month SIM
£3.99
a month
500MB
data
150
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
plusnet logo
plusnet SIM Only
500MB Data
12 Month Contract
£6
a month
500MB
data
250
minutes
500
texts
More Info
Check Coverage
At Your Postcode

Smart Caps ensure you don't overspend

Award Winning Value For Money

  • Set a Smart Cap when your purchase to control what happens when you overspend
  • UK based customer service
  • Roam Like at Home - Use your monthly plan allowance in more than 40 EU destinations
  • Add Bolt-Ons to top-up your allowance if you're having a busy month
ee logo
EE SIM Only
250MB Data
1 Month SIM
£14
a month
250MB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.

Can't find the right deal?

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How To Compare SIM Only Deals?

If you're comparing products before you buy it's important to know the best way to compare them to make sure you get the best deal. For SIM only deals there are three key things to take into account: Price, Data, Network. You can use the number of minutes and texts to compare deals but in most cases the SIM deals have unlimited allowances for both so we won't discuss them here.

Price: Comparing SIM deals by price is probably the most important factor when choosing the right plan for you. Most customers know roughly how much they want to spend per month so make sure you compare deals in a similar price range. The price of the SIM can drastically change the amount of data you get and the price per GB goes down a lot when you pay more than £10 - £15 per month. If you want an affordable SIM there are many that are £10 or cheaper - Check out our top picks for the best cheap SIM deals. If you can afford to spend more per month on your SIM then there can be big ranges in the data allowances available, for example a 10GB SIM from O2 is £17 but for just £3 more you could get a 100GB SIM from Three

Data: It can be difficult to know how much data you will need when comparing SIMs but the best guide is to know how much data you've used in the past. If you can't get this information from your phone or an app provided by your network you can always ring them to check your past bills. Once you know your rough data usage you can then compare similar plans and find the best price or network that suits you.

Network: It's now easier than ever to switch between mobile networks so it's important to browse the multiple UK networks available to find the right one for you. Most customers will be with one of the bigger networks (Vodafone, O2, EE) and so may choose to stick with them but you should be aware that these networks do not necessarily provide good value for money. When comparing SIM deals make sure to check out some of the alternative networks (Three for good data deals, Voxi for a flexible, no credit check SIM or BT's affordable SIMs for broadband customers). All of the UK mobile networks have benefits and downsides to them so do a little research on things like customer perks, 4g coverage and customer service ratings to jhelp make your decision.

Choosing between a 12 month and 1 month SIM

The length of your SIM deal can have an affect on the price so it's important to know which you're looking for when comparing SIM deals.

12 month SIM deals are cheaper in general than 1 month because you are paying the network for a longer period. There is usually no other benfit in terms of the perks you get but keep in mind that not all networks offer 12 month and 1 month. This can be important when comparing deals because not all networks will have the kind of deal you want

If you don't like the sound of sticking with one SIM deal for 12 months then 1 month SIM deals are much more flexible. Getting a 1 month SIM (sometimes called a "30 day") means that after your one month contract ends you're free to switch to another network or continue your contract for another month. You will pay slightly more per month for the flexibility but for some customers this can be great value for money. If you're looking for a SIM deal that doesn't require a credit check we've put all of the available no credit check SIM deals in one place.

Things to remember when you compare SIM deals

You DO NOT need to stick with your current network: Many people feel like they need to stay with their current network either to keep their number or find a good deal. Keeping your number when you switch networks is a really simple process and it's about to get easier. If you find a good deal on another network you can keep your number AND get a great deal.

There's a SIM deal for every credit history: Some customers get a SIM deal because their credit history prevents them from getting a mobile phone deal and credit checks for a SIM are less stringent. No matter what your credit history is, we believe there's a deal for you and even if you don't actually want your credit checked there are even some options. It's important to judge your own credit score when comparing SIM deals and if you feel like you want something that's a little easier to pass then a 1 month or no credit check SIM might be the right fit.

You will need a handset on the right network: If you have a mobile handset already, it's best to make sure that the SIM contract you've chosen uses a network which the phone is unlocked for. In simple terms this means that if a handset is unlocked for EE you can only use an EE SIM in it. You can easily unlock a phone for a particular network so you can use the SIM you've chosen or if you're buying a new handset just make sure it has been unlocked fully (for all networks) or allows you to use the network you've chosen.