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UK’s best SIM-only deals giving you all the data you need
Get the UK’s best unlimited SIM-only deals with flexible monthly contracts so you can keep your phone without committing to lengthy plans.
Unlock the UK’s cheapest SIM-only plan with Go Unlimited that can keep up with your data usage with 99% UK coverage. 500GB fair use policy applies.
Add up to three extra unlimited data SIMs for free for the first three months with 5G and free EU roaming.
Our Go Unlimited plan
Need more data? Our Go Unlimited SIM-only deal gives you unlimited data and includes access to 5G. Whether you’re a serial internet surfer or love to stream the latest entertainment, our unlimited data plan has you covered. View our Unlimited data SIM deals.
You’ll also get EU roaming at no extra cost.
4G & 5G Connectivity
Wi-Fi Calling
Monthly rolling contract
EU roaming included
Up to three extra SIMs free
Our Go Essential plan
Our Go Essential plan gives you 10GB of data allowance a month at an incredible price. So you don’t have to worry about your monthly phone bill changing.
With our cheap SIM-only Go Essential plan, you’ll get:
4G Connectivity
Wi-Fi Calling
Monthly rolling contract
Save every month with the UK’s best mobile deal for an unlimited SIM
Add up to three more Go Unlimited SIMs for free for three months to save even more. Keep the whole family connected for less with 99% UK coverage.
Vodafone | EE | O2 | Three | Lebara | |
|---|---|---|---|---|---|
Monthly Saving | £34 | £22 | £25 | £23 | £12 |
Annual Saving | £408 | £264 | £300 | £276 | £144 |
Add up to extra unlimited data SIMs cards for free for three months
When you purchase your Go Unlimited SIM for £13 a month, you can add up to three additional SIMs for free for the first three months. Go Unlimited for the UK’s cheapest unlimited deal. Discover our family SIM deals.
X1 Unlimited Max SIM
£13 a month
X2 Unlimited Max SIMs
Add a second unlimited SIM and save £39
X3 Unlimited Max SIMs
Add a third unlimited max SIM and save £78
X4 Unlimited Max SIMs
Add a fourth unlimited max SIM and save £117
How low can your bills go?
Joining us unlocks access to our exclusive, bill-shrinking Cashback Card.
It’s a top-up card that, every time you use it, can earn you up to 10% cashback that comes straight off your Utility Warehouse bill. And right now, new customers can get up to £250 in bonus credit loaded onto the card when they switch multiple services.
Free for three months and then £3/month.
Why choose UW for your mobile SIM deal?
Flexible monthly contracts
You won’t have to commit to a lengthy mobile phone plan as our SIM-only deals are on monthly rolling contracts – so you’re never locked in. Learn more about our mobile deals.
Ultra-fast speeds
Our mobile plans are powered by a network with 99% UK coverage, so you’ll get top speeds and strong signal nationwide. Unlimited+ customers will also get 5G.
Crystal-clear connections
We also offer Wi-Fi Calling with both our Essentials and Unlimited+ plans, so you can enjoy a clearer connection, even in locations with poor cellular signals.
30 days to change your mind
After you switch to UW, you’ll get 30 days to change your mind and cancel your contract without a penalty.
How to switch your mobile provider to UW
Order your SIM
Our SIM-only plans are available to new and existing UW customers. New customers can sign up here, and current customers can add to their bundle by signing into their account. Or you can give us a call on 0333 777 0777.
Activate your SIM
We’ll send your SIM to you, and it should arrive in 3–5 working days. Simply activate your new SIM in your online account or the UW app. You can find out more about activating your SIM here.
You’re all set
Once your new SIM card has been activated, pop it into your phone, and you’re ready to go.
A network you can rely on
When you switch your mobile provider to UW, you’ll get access to fast speeds and high-quality Wi-Fi Calling.
With 99% UK coverage available with both 4G and 5G. Use our mobile network checker to see what coverage you can get in your area.
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FAQs
A SIM-only deal is when you only pay for your data, minutes, and texts for a set monthly cost. You receive a SIM, but not a handset.
SIM-only deals are ideal if you want to keep your phone but upgrade to a contract that better suits your needs.
Yes, it’s easy to switch to a UW SIM-only deal without changing your mobile number. You can get a porting authorisation code (PAC) that allows you to transfer your current number from your previous network provider to your new UW contract.
If you want to upgrade your current UW tariff to a SIM-only contract, your number will automatically stay the same.
Activating your new UW SIM card is easy. You can activate your SIM in your online account, in the UW app, or by calling our automated activation line on 0333 003 5645.
If you call us to activate your SIM, please have the following information on hand:
The mobile number to activate
The year of birth of the mobile holder
We offer flexible SIM-only contracts that you pay for on a monthly basis and last for one calendar month. This means you’re not tied down to a lengthy tariff.
Our Unlimited+ plan includes EU roaming, so you can make calls, send texts, and use your data allowance in Europe (EU) and The European Economic Area (EEA) at no extra charge.
The following countries are included in our Roam like Home service:
Austria, Belgium, Bulgaria, Canary Islands (Spain), Croatia, Cyprus (South), Czech Republic, Denmark, Estonia, Finland, France, French Guiana (France), Germany, Gibraltar, Greece, Guadeloupe (France), Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Martinique (France), Monaco, Netherlands, Norway, Poland, Portugal, Reunion (France), Romania, Saint Barthelemy (France), Saint Martin (France), San Marino, Slovakia, Slovenia, Spain, Sweden, Switzerland, Vatican City.
On our Unlimited+ plan, our Roam like Home service comes with a Fair Usage policy that lets you use up to 14GB of your data allowance in the Roam like Home countries.
Once you’ve used your Fair Usage policy amount when roaming, we’ll notify you, and surcharges will apply to continue using data when roaming in our Europe Zone.