Compare Mobile SIM Only Deals

Compare the best mobile SIM deals from the UK's mobile providers. All mobile SIM only deals offer a choice of Standard, Micro or Nano SIM size (multi SIM) to fit your 3G, 4G or 5G mobile phone. Switch from your current network and save money with this range of 30 day, 12 month and 24 month contract SIM deals with unlimited data allowances and special features like data rollover and data sharing.

Featured May 2025 Mobile SIM Only deals

* Please note prices may change during the contract

Provider	Deal Information	Mins	Texts	Data	Contract Period	Monthly Cost	Visit Provider Website
Monthly cost (prices may change during contract) £15.00 (£0.00 initial cost)	VOXI Mobile 90GB SIM only SALE - 3x DATA Offer Uses The Vodafone Network (5G Ready) Rolling 30-Day Subscription Without A Contract - Cancel Anytime Unlimited Use Of Social Media, Music & Video Across 20 Apps Without Eating Into Your Data (UK Only) More Ways To Connect - Wi-Fi Calling + 4G Calling + Visual Voicemail Unlimited minutes Unlimited texts 90GB data Contract period: 1 month	Unlimited minutes	Unlimited texts	90GB data	1 month	Prices may change during contract* £15.00 (£0.00 initial cost)	Go to the VOXI Mobile website
Monthly cost (prices may change during contract) £16.00 (£0.00 initial cost)	Tesco Mobile 100GB SIM only Clubcard Price + £30 Clubcard Voucher Uses The O2 Network No EU Roaming Fees Until 2025 Price Frozen For The Length Of The Contract Works On 4G & 5G Unlimited minutes Unlimited texts 100GB data Contract period: 24 months	Unlimited minutes	Unlimited texts	100GB data	24 months	Prices may change during contract* £16.00 (£0.00 initial cost)	Go to the Tesco Mobile website

Latest May 2025 search results for Mobile SIM Only deals

The results below are sorted by monthly cost. Please sort by your own purchase criteria to find a SIM-only deal that best suits your needs, then start your order.

* Please note prices may change during the contract

Provider	Deal Information	Mins	Texts	Data	Contract Period	Monthly Cost	Visit Provider Website
Monthly cost (prices may change during contract) £0.00 (£0.00 initial cost)	EE Mobile Unlimited SIM only EE Winter Sale - FREE For 3 Months, £30p/m After 5G SIM Plan (For 5G Phones + Compatible With 4G Handsets) Use Your Data, Calls & Texts In The EU (EE Roam Abroad Pass Required) Gift Your Spare Data To Your Family Unlimited minutes Unlimited texts Unlimited data Contract period: 24 months	Unlimited minutes	Unlimited texts	Unlimited data	24 months	Prices may change during contract* £0.00 (£0.00 initial cost)	Go to the EE Mobile website
Monthly cost (prices may change during contract) £0.00 (£0.00 initial cost)	EE Mobile Unlimited SIM only EE Winter Sale - FREE For 3 Months, £36p/m After 5G SIM Plan (For 5G Phones + Compatible With 4G Handsets) Use Your Data, Calls & Texts In The EU (EE Roam Abroad Pass Required) One Extra Included For The Length Of The Contract - Choose From Netflix, TNT Sports Ultimate, Apple Music Or An EE Roam Abroad Pass Gift Your Spare Data To Your Family Unlimited minutes Unlimited texts Unlimited data Contract period: 24 months	Unlimited minutes	Unlimited texts	Unlimited data	24 months	Prices may change during contract* £0.00 (£0.00 initial cost)	Go to the EE Mobile website
Monthly cost (prices may change during contract) £6.00 (£0.00 initial cost)	iD Mobile 6GB SIM only Uses The Three Network All Plans Come With Data Rollover, Capping & Inclusive EU Roaming Unlimited minutes Unlimited texts 6GB data Contract period: 1 month	Unlimited minutes	Unlimited texts	6GB data	1 month	Prices may change during contract* £6.00 (£0.00 initial cost)	Go to the iD Mobile website
Monthly cost (prices may change during contract) £9.50 (£0.00 initial cost)	Tesco Mobile 12GB SIM only Clubcard Price Uses The O2 Network No EU Roaming Fees Until 2025 Price Frozen For The Length Of The Contract Works On 4G & 5G Unlimited minutes Unlimited texts 12GB data Contract period: 24 months	Unlimited minutes	Unlimited texts	12GB data	24 months	Prices may change during contract* £9.50 (£0.00 initial cost)	Go to the Tesco Mobile website
Monthly cost (prices may change during contract) £10.00 (£0.00 initial cost)	iD Mobile 70GB SIM only Uses The Three Network All Plans Come With Data Rollover, Capping & Inclusive EU Roaming Unlimited minutes Unlimited texts 70GB data Contract period: 1 month	Unlimited minutes	Unlimited texts	70GB data	1 month	Prices may change during contract* £10.00 (£0.00 initial cost)	Go to the iD Mobile website
Monthly cost (prices may change during contract) £10.00 (£0.00 initial cost)	Sky Mobile 5GB SIM only Uses The O2 Network FREE Calls To UK Based Customer Service Roll Over All Your Unused Data For Up To 3 Years Mix Your Data, Calls & Texts Every Month Unlimited Streaming On All Sky Apps Share Spare Data In Your Piggybank With Up To 7 SIMs On Your Account Unlimited minutes Unlimited texts 5GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	5GB data	12 months	Prices may change during contract* £10.00 (£0.00 initial cost)	Go to the Sky Mobile website
Monthly cost (prices may change during contract) £10.00 (£0.00 initial cost)	3 30GB SIM only 5G At No Extra Cost Personal Hotspot Go Roam Around The World Unlimited minutes Unlimited texts 30GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	30GB data	12 months	Prices may change during contract* £10.00 (£0.00 initial cost)	Go to the 3 website
Monthly cost (prices may change during contract) £10.00 (£0.00 initial cost)	VOXI Mobile 30GB SIM only SALE - 2x DATA Offer Uses The Vodafone Network (5G Ready) Rolling 30-Day Subscription Without A Contract - Cancel Anytime Unlimited Use Of Social Media Across 7 Apps Without Eating Into Your Data (UK Only) More Ways To Connect - Wi-Fi Calling + 4G Calling + Visual Voicemail Unlimited minutes Unlimited texts 30GB data Contract period: 1 month	Unlimited minutes	Unlimited texts	30GB data	1 month	Prices may change during contract* £10.00 (£0.00 initial cost)	Go to the VOXI Mobile website
Monthly cost (prices may change during contract) £12.00 (£0.00 initial cost)	3 100GB SIM only 5G At No Extra Cost Personal Hotspot Go Roam Around The World Unlimited minutes Unlimited texts 100GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	100GB data	12 months	Prices may change during contract* £12.00 (£0.00 initial cost)	Go to the 3 website
Monthly cost (prices may change during contract) £12.00 (£0.00 initial cost)	Tesco Mobile 30GB SIM only Uses The O2 Network No EU Roaming Fees Until 2025 Price Frozen For The Length Of The Contract Works On 4G & 5G Unlimited minutes Unlimited texts 30GB data Contract period: 24 months	Unlimited minutes	Unlimited texts	30GB data	24 months	Prices may change during contract* £12.00 (£0.00 initial cost)	Go to the Tesco Mobile website
Monthly cost (prices may change during contract) £12.00 (£0.00 initial cost)	Sky Mobile 25GB SIM only Spring SALE - 25% Off Uses The O2 Network FREE Calls To UK Based Customer Service Roll Over All Your Unused Data For Up To 3 Years Mix Your Data, Calls & Texts Every Month Unlimited Streaming On All Sky Apps Share Spare Data In Your Piggybank With Up To 7 SIMs On Your Account Unlimited minutes Unlimited texts 25GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	25GB data	12 months	Prices may change during contract* £12.00 (£0.00 initial cost)	Go to the Sky Mobile website
Monthly cost (prices may change during contract) £13.00 (£0.00 initial cost)	O2 1GB SIM only Get VIP Treatment With Freebies & Prize Draws On O2 Priority Get Double Data When Your Home Also Has Virgin Media Broadband FREE O2 Wi-Fi When You Are Out & About Roam Freely In The EU Up To 25GB (O2 Is The Only Major Network That Does Not Charge For EU Roaming Up To 25GB) 3 Months FREE Disney+ Unlimited minutes Unlimited texts 1GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	1GB data	12 months	Prices may change during contract* £13.00 (£0.00 initial cost)	Go to the O2 website
Monthly cost (prices may change during contract) £13.00 (£0.00 initial cost)	Vodafone Mobile 200GB SIM only 6 Months HALF PRICE Offer - £26p/m After Includes 4 Roam Free Destinations (Ireland, Isle Of Man, Iceland & Norway - Pay Extra For Other European & Worldwide Destinations) Flexible Upgrades Available After Just 3 Months 3 Month FREE Trial Of Secure Net Hurry! Ends Soon Unlimited minutes Unlimited texts 200GB data Contract period: 24 months	Unlimited minutes	Unlimited texts	200GB data	24 months	Prices may change during contract* £13.00 (£0.00 initial cost)	Go to the Vodafone Mobile website
Monthly cost (prices may change during contract) £14.00 (£0.00 initial cost)	Sky Mobile 50GB SIM only Spring SALE - 25% Off Uses The O2 Network FREE Calls To UK Based Customer Service Roll Over All Your Unused Data For Up To 3 Years Mix Your Data, Calls & Texts Every Month Unlimited Streaming On All Sky Apps Share Spare Data In Your Piggybank With Up To 7 SIMs On Your Account Unlimited minutes Unlimited texts 50GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	50GB data	12 months	Prices may change during contract* £14.00 (£0.00 initial cost)	Go to the Sky Mobile website
Monthly cost (prices may change during contract) £15.00 (£0.00 initial cost)	VOXI Mobile 90GB SIM only SALE - 3x DATA Offer Uses The Vodafone Network (5G Ready) Rolling 30-Day Subscription Without A Contract - Cancel Anytime Unlimited Use Of Social Media, Music & Video Across 20 Apps Without Eating Into Your Data (UK Only) More Ways To Connect - Wi-Fi Calling + 4G Calling + Visual Voicemail Unlimited minutes Unlimited texts 90GB data Contract period: 1 month	Unlimited minutes	Unlimited texts	90GB data	1 month	Prices may change during contract* £15.00 (£0.00 initial cost)	Go to the VOXI Mobile website
Monthly cost (prices may change during contract) £16.00 (£0.00 initial cost)	iD Mobile Unlimited SIM only Uses The Three Network All Plans Come With Data Rollover, Capping & Inclusive EU Roaming Unlimited minutes Unlimited texts Unlimited data Contract period: 12 months	Unlimited minutes	Unlimited texts	Unlimited data	12 months	Prices may change during contract* £16.00 (£0.00 initial cost)	Go to the iD Mobile website
Monthly cost (prices may change during contract) £16.00 (£0.00 initial cost)	3 Unlimited SIM only 5G At No Extra Cost Personal Hotspot Go Roam Around The World Unlimited minutes Unlimited texts Unlimited data Contract period: 12 months	Unlimited minutes	Unlimited texts	Unlimited data	12 months	Prices may change during contract* £16.00 (£0.00 initial cost)	Go to the 3 website
Monthly cost (prices may change during contract) £16.00 (£0.00 initial cost)	EE Mobile 25GB SIM only EE Winter Sale - Save £168 5G SIM Plan (For 5G Phones + Compatible With 4G Handsets) Use Your Data, Calls & Texts In The EU (EE Roam Abroad Pass Required) Gift Your Spare Data To Your Family Unlimited minutes Unlimited texts 25GB data Contract period: 24 months	Unlimited minutes	Unlimited texts	25GB data	24 months	Prices may change during contract* £16.00 (£0.00 initial cost)	Go to the EE Mobile website
Monthly cost (prices may change during contract) £16.00 (£0.00 initial cost)	Tesco Mobile 100GB SIM only Clubcard Price + £30 Clubcard Voucher Uses The O2 Network No EU Roaming Fees Until 2025 Price Frozen For The Length Of The Contract Works On 4G & 5G Unlimited minutes Unlimited texts 100GB data Contract period: 24 months	Unlimited minutes	Unlimited texts	100GB data	24 months	Prices may change during contract* £16.00 (£0.00 initial cost)	Go to the Tesco Mobile website
Monthly cost (prices may change during contract) £17.00 (£0.00 initial cost)	Vodafone Mobile 200GB SIM only 6 Months HALF PRICE Offer - £34p/m After Includes 4 Roam Free Destinations (Ireland, Isle Of Man, Iceland & Norway - Pay Extra For Other European & Worldwide Destinations) Includes 24 Months Worth Of Entertainment. Choose From Prime Video, YouTube Premium or Spotify Premium 3 Month FREE Trial Of Secure Net Hurry! Offer Ends Soon Unlimited minutes Unlimited texts 200GB data Contract period: 24 months	Unlimited minutes	Unlimited texts	200GB data	24 months	Prices may change during contract* £17.00 (£0.00 initial cost)	Go to the Vodafone Mobile website
Monthly cost (prices may change during contract) £20.00 (£0.00 initial cost)	O2 25GB SIM only Get VIP Treatment With Freebies & Prize Draws On O2 Priority Get Double Data When Your Home Also Has Virgin Media Broadband FREE O2 Wi-Fi + Roam Freely In The EU Up To 25GB (O2 Is The Only Major Network That Does Not Charge For EU Roaming Up To 25GB) 3 Months FREE Apple Music + Choose From 3 Months FREE Disney+, Amazon Prime Video, Amazon Music Unlimited Or Audible Unlimited minutes Unlimited texts 25GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	25GB data	12 months	Prices may change during contract* £20.00 (£0.00 initial cost)	Go to the O2 website
Monthly cost (prices may change during contract) £24.99 (£0.00 initial cost)	O2 150GB SIM only Get VIP Treatment With Freebies & Prize Draws On O2 Priority Get Double Data When Your Home Also Has Virgin Media Broadband FREE O2 Wi-Fi + Roam Freely At No Extra Cost In 75 Destinations Worldwide Including The EU, USA & Australia 6 Months FREE Apple Music + Choose From 6 Months FREE Disney+, Amazon Music Unlimited Or Amazon Prime Video Unlimited minutes Unlimited texts 150GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	150GB data	12 months	Prices may change during contract* £24.99 (£0.00 initial cost)	Go to the O2 website
Monthly cost (prices may change during contract) £28.00 (£0.00 initial cost)	Sky Mobile 100GB SIM only Uses The O2 Network FREE Calls To UK Based Customer Service Roll Over All Your Unused Data For Up To 3 Years Mix Your Data, Calls & Texts Every Month Unlimited Streaming On All Sky Apps Share Spare Data In Your Piggybank With Up To 7 SIMs On Your Account Unlimited minutes Unlimited texts 100GB data Contract period: 12 months	Unlimited minutes	Unlimited texts	100GB data	12 months	Prices may change during contract* £28.00 (£0.00 initial cost)	Go to the Sky Mobile website
Monthly cost (prices may change during contract) £30.00 (£0.00 initial cost)	VOXI Mobile Unlimited SIM only Uses The Vodafone Network (5G Ready) Rolling 30-Day Subscription Without A Contract - Cancel Anytime More Ways To Connect - Wi-Fi Calling + 4G Calling + Visual Voicemail Unlimited minutes Unlimited texts Unlimited data Contract period: 1 month	Unlimited minutes	Unlimited texts	Unlimited data	1 month	Prices may change during contract* £30.00 (£0.00 initial cost)	Go to the VOXI Mobile website
Monthly cost (prices may change during contract) £33.00 (£0.00 initial cost)	Vodafone Mobile Unlimited SIM only Includes 4 Roam Free Destinations (Ireland, Isle Of Man, Iceland & Norway - Pay Extra For Other European & Worldwide Destinations) Flexible Upgrades Available After Just 3 Months 3 Month FREE Trial Of Secure Net Hurry! Ends Soon Unlimited minutes Unlimited texts Unlimited data Contract period: 24 months	Unlimited minutes	Unlimited texts	Unlimited data	24 months	Prices may change during contract* £33.00 (£0.00 initial cost)	Go to the Vodafone Mobile website