10 Best Sim Card in The UK

Last updated on 02/08/2025
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Best Choice
1
9.7
Exceptional
O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. Includes 25GB to Roam for Free in 47 Countries. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month).
Sims4Travel
O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. Includes 25GB to Roam for Free in 47 Countries. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month).
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Why We Love It
  • Unlimited 4G/5G data preloaded.
  • No contracts or commitments.
  • Supports free international roaming.
Main Highlights
  • PRELOADED DATA: O2 SIM Card Preloaded with UNLIMITED 4G/5G Data. Enjoy Super-Fast 4G/5G Data Speeds with the UK’s most reliable network. The Data Sim Bundle lasts for 1 month from first use. Easy to renew your bundle for longer
  • NO CONTRACTS: The Preloaded O2 Data SIM Card is simple to activate. There are No Contracts, No Commitments, No Credit Checks, No Tie-ins & No Personal ID required
  • FREE ROAMING: Includes 25GB of Data which can be used to Roam for Free in any of the 47 countries listed in the description below. So whether you are on Holiday, a Business Trip or Working from Home, you can count on the Preloaded O2 4G/5G Data SIM for reliable & super-fast internet
  • MULTIPLE USES: The Sim comes in a Triple-Sized format, meaning it is suitable for use with all O2 or Unlocked Mobile Wi-Fi devices, Routers, Tablets, iPads, Dongles, Laptops, Mobile Phones, CCTV & Alarm systems. Tethering & Mobile Hotspots are also supported
  • SPEED YOU WILL LOVE: Working from Home, Streaming Online, Gaming, Scrolling through Social Media - The O2 4G/5G Preloaded SIM card provides amazing performance without any speed restrictions
9.7
Exceptional
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Best Value
2
9.5
Superb
Save 4%
Lebara UK Unlimited Data Pay As You Go SIM Card, Unlimited UK Minutes & Texts, 100 International minutes for £25
Lebara
Lebara UK Unlimited Data Pay As You Go SIM Card, Unlimited UK Minutes & Texts, 100 International minutes for £25
4% OffFree Shipping
9.5
Superb
Save 4%
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3
9.3
Superb
Lebara SIM Card, Unlimted Data SIM for £12.50, Half Price for First 3 Months, No Contract, UK Calls, UK Texts and International Calls Included, Multi-size, Fits All Devices
Lebara
Lebara SIM Card, Unlimted Data SIM for £12.50, Half Price for First 3 Months, No Contract, UK Calls, UK Texts and International Calls Included, Multi-size, Fits All Devices
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Why We Love It
  • Huge savings for three months.
  • Convenient pre-loaded plan available.
  • Flexibility to change anytime.
Main Highlights
  • Register to activate your promotion.
  • Plan is Pre-loaded and ready to use.
  • 30-day rolling plan. No contract. Change or cancel anytime.
  • Keep your existing number.
  • EU and India roaming included.
9.3
Superb
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4
9.1
Superb
EE PAYG £10 Data Sim Includes £10 pre-paid credit, 8GB Data, 500 Minutes and Unlimited Texts (EE £10-20GB)
EE
EE PAYG £10 Data Sim Includes £10 pre-paid credit, 8GB Data, 500 Minutes and Unlimited Texts (EE £10-20GB)
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Why We Love It
  • Generous data and call allowances.
  • Attractive bonus on multiple purchases.
  • Fast 4G cellular technology.
Main Highlights
  • 20GB Data included, lasts up to 30 days
  • The packaging you receive may differ from the image displayed but the data you receive will be as detailed above
  • Roaming is not included
  • Free Boost - Buy 2 packs and get 2GB free
  • 500 minutes and unlimited texts
9.1
Superb
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5
8.9
Excellent
THREE 4G/5G SIM Card UK & ROAM FREE in over 70 destinations - PREPAID PAYG £10 Bundle - 20GB + (20GB FREE DATA) Unltd Texts & Mins - ROAMING ALLOWANCE 6GB
love 2 surf
THREE 4G/5G SIM Card UK & ROAM FREE in over 70 destinations - PREPAID PAYG £10 Bundle - 20GB + (20GB FREE DATA) Unltd Texts & Mins - ROAMING ALLOWANCE 6GB
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Why We Love It
  • Generous data bundle with auto-renew.
  • Global roaming in 70 destinations.
  • Fastest 5G network in UK.
Main Highlights
  • Quick & Easy Sim Activation - FREE 20GB PROMO – total 40GB
  • Bundle lasts 30 days from activation. NOTE: CREDIT WILL BE ZERO - allocated to bundle allowance
  • Travelling abroad - GO ROAM in over 70 destinations (includes EUROPE) - ROAMING ALLOWANCE 6GB, calls and texts to UK numbers only
  • UK’s fastest 5G network -Trio SIM fits any unlocked 4G and 5G device. Personal hotspot/tethering allowed
  • INTERNATIONAL CALLING SERVICE TO USE WITH SIM - E.g. USA - 0.3p/min and EU - 0.3p/min (optional extra)
8.9
Excellent
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6
8.7
Excellent
Vodafone SIM Card UK PREPAID PAYG £10 Bundle -7GB + (14GB FREE DATA every month for 3 months with regular top ups (Promotion request deadline of 19.01.2026) - Love2surf RETAIL PACK
love 2 surf
Vodafone SIM Card UK PREPAID PAYG £10 Bundle -7GB + (14GB FREE DATA every month for 3 months with regular top ups (Promotion request deadline of 19.01.2026) - Love2surf RETAIL PACK
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Why We Love It
  • Prepaid bundle provides monthly flexibility.
  • Fits any unlocked phone easily.
  • Allows affordable international calling.
Main Highlights
  • QUICK & EASY SIM ACTIVATION - FREE 14GB PROMO activate by 19 JAN 2026 – total 21GB
  • The sim pack you receive will state 7GB on the printed packaging. This will be upgraded to 21GB ‘Extra Data’ promotional offer after activation on our website
  • BUNDLE DOES NOT INCLUDE EUROPEAN ROAMING
  • Trio SIM fits any unlocked 4G and above phone or devices locked to Vodafone network. Personal hotspot/tethering allowed
  • INTERNATIONAL CALLING SERVICE TO USE WITH SIM - E.g. USA - 0.3p/min and EU - 0.3p/min (optional extra)
8.7
Excellent
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7
8.7
Excellent
EE Pay As You Go SIM Card UK PREPAID PAYG £10 Bundle 8GB + (12GB FREE DATA every month for 6 months with regular top ups (Promotion request deadline of 07.10.2025)
love 2 surf
EE Pay As You Go SIM Card UK PREPAID PAYG £10 Bundle 8GB + (12GB FREE DATA every month for 6 months with regular top ups (Promotion request deadline of 07.10.2025)
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Why We Love It
  • Free 12GB data promo.
  • Trio SIM fits any device.
  • 4G speeds and WiFi calling.
Main Highlights
  • Quick & Easy Sim Activation - FREE 12GB PROMO activate by 07 OCT 2025 – total 20GB
  • The sim pack you receive will state 8GB on the printed packaging. This will be upgraded to 20GB ‘Extra Data’ promotional offer after activation on our website
  • Bundle lasts 30 days from activation -BUNDLE DOES NOT INCLUDE EUROPEAN ROAMING. Trio SIM fits any unlocked 4G and above phone or devices locked to EE network. Personal hotspot/tethering allowed
  • 4G speeds up to 25Mbps (No 5G with PAYG). WIFI CALLING + WIFI COVERAGE ON LONDON UNDERGROUND + 150,000 LOCATIONS ACROSS UK
  • To view EE’s pay as you go pre-service information, visit ee.co.uk/paygservice. Please read before placing your order. You can download or save the document from your browser
8.7
Excellent
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8
8.7
Excellent
O2 SIM Card UK & EUROPE (ROAM FREE) PREPAID PAYG £10 Bundle -8GB + Unltd Texts & Mins - ROAMING ALLOWANCE 8GB + International Calling Option - (Love2surf RETAIL PACK)
love 2 surf
O2 SIM Card UK & EUROPE (ROAM FREE) PREPAID PAYG £10 Bundle -8GB + Unltd Texts & Mins - ROAMING ALLOWANCE 8GB + International Calling Option - (Love2surf RETAIL PACK)
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Why We Love It
  • Convenient prepaid bundle.
  • Roaming within EU zone.
  • Affordable international calls.
Main Highlights
  • QUICK & EASY SIM ACTIVATION - 8GB
  • Bundle lasts 30 days from activation. NOTE: CREDIT WILL BE ZERO - allocated to bundle allowance (see description)
  • MUST USE SIM IN UK PRIOR TO USE IN EUROPE – data is limited to 25GB while roaming (calls & texts allowance is for UK numbers only)
  • Trio SIM fits any unlocked 2G and above phone or devices locked to O2 network. Personal hotspot/tethering allowed
  • INTERNATIONAL CALLING SERVICE TO USE WITH SIM - E.g. USA - 0.3p/min and EU - 0.3p/min (optional extra)
8.7
Excellent
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9
8.7
Excellent
Save 32%
Vodafone Pay As You Go Sim Card
Vodafone
Vodafone Pay As You Go Sim Card
32% Off
Why We Love It
  • Makes switching to Vodafone easy.
  • Revives old phones effortlessly.
  • Perfect for UK visits.
Main Highlights
  • Suitable if your switching to the Vodafone network
  • Reactivate an old phone with this Sim Card
  • Visit the UK with your handset
  • Connect your existing phone to a wide range of Vodafone products and services
  • New SIM with mobile phone number
8.7
Excellent
Save 32%
Amazon Logo
10
8.7
Excellent
Lebara SIM Card: 25GB for £5, Half Price for First 3 Months, No Contract, UK Calls, UK Texts and International Calls Included, Multi-size, Fits All Devices
Lebara
Lebara SIM Card: 25GB for £5, Half Price for First 3 Months, No Contract, UK Calls, UK Texts and International Calls Included, Multi-size, Fits All Devices
Free Shipping
Why We Love It
  • 50% Off for three months.
  • Pre-loaded plan for convenience.
  • No contract, change anytime easily.
Main Highlights
  • Register to activate your promotion.
  • Plan is Pre-loaded and ready to use.
  • 30-day rolling plan. No contract. Change or cancel anytime.
  • Keep your existing number.
  • Roam like home in the EU and India.
8.7
Excellent
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