About Us
About Us
About Us
The SIM Warehouse is your go-to destination for affordable SIM Cards.
We specialise in the best value Unlimited SIM cards on both O2 and Vodafone networks. With 30-day rolling contracts as standard, we offer the flexibility to cancel at any time. You can either keep your current number or choose a new one. We make switching providers hassle-free!
Discover the freedom of Unlimited with The SIM Warehouse today. You can either keep your current number or choose a new one. We make switching providers hassle-free! Plus, with our exceptional customer support, you can be assured of help whenever you need it, making your experience seamless and stress-free.
Unlimited O2 SIM -
12 Month Contract
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Set up today for £3.00
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We collect £16.00 on activation, then £19.00 per month after.
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12 Month Contract
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Unlimited Minutes & Texts
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Unlimited Monthly Data
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Includes 2000 minutes & 2000 texts - UK to Europe
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5G Ready
The Order Process
Choose your SIM and order online today.
The initial payment of only £3 will be taken today. This will then be credited against your first monthly charge, when you active your SIM card and your payment subscription begins.
Once your order is complete, you will receive a confirmation email along with receipt of payment. This will be followed by a dispatch email once your SIM card has been shipped, within approximately 2 business days.
How To Activate Your SIM Card – Upon receipt of your SIM card, check your emails for the activation email. Simply click the activate button in this email to activate your SIM card.
Once you have requested activation, we will collect your first monthly subscription charge from your card details provided and set this up for future payments.
You will receive an email to confirm when your SIM Card has been activated.
Please be aware all our services are inclusive subscriptions, meaning most services not listed within the tariff description would be restricted (E.g. roaming data and international calls outside of inclusive tariff). You will, however, be able to Roam Like at Home if this is included in your selected package above.
Please read the below before proceeding to The Order Process-
About Us
The SIM Warehouse is your go-to destination for affordable SIM Cards.
We specialise in the best value Unlimited SIM cards on both O2 and Vodafone networks. With 30-day rolling contracts as standard, we offer the flexibility to cancel at any time. You can either keep your current number or choose a new one. We make switching providers hassle-free!
Great Value SIM Cards
Discover the freedom of Unlimited with The SIM Warehouse today. You can either keep your current number or choose a new one. We make switching providers hassle-free! Plus, with our exceptional customer support, you can be assured of help whenever you need it, making your experience seamless and stress-free.
Why Our SIM Only Plans Stand Out
Unlimited Data, Calls & Texts
Never stress over usage limits again. Stream, browse, work, and stay in touch—with our SIM-only contracts, it’s all truly unlimited.
Ultimate Flexibility
Flexible contracts means you don't have to be locked in. You can join different plans with options for 1-, 12-, or 24-month commitments, making it easy to choose a plan that fits your needs.
Choose Your Network
With a choice of O2 or Vodafone SIM cards you will be on one of the UK's largest mobile network operator without the worry of long contracts
Keep Your Number or Start Fresh
Transfer your existing number in minutes or get a brand-new number from us. Switching networks is easy with the Text to Switch service, allowing you to seamlessly transfer your phone number without any hassle. Simply text PAC to 65075 and start the process of transferring your number today.
Get Rewarded for Spreading the Word
Refer a friend and get £10 credit when they pay their first bill. Enjoy even more value from your deal.
5G & 4G Speeds, All SIM Types Supported
Get blazing-fast internet on your device, wherever you are. We support SIM, Micro-SIM, Nano-SIM & eSIM across phones, tablets, and even mobile broadband devices.
Why Choose The SIM Warehouse
30 Day Rolling Contracts
No lengthy contracts with our monthly rolling plans. Change your plan or cancel anytime.
Unlimited Calls & Texts
All of our plans include unlimited UK calls and texts.
Choose Your Network
Choose your favourite network with O2 and Vodafone SIM Cards available.
Get Rewarded
Receive £10 credit for every friend you refer when they pay their first bill.
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How do monthly rolling contracts work?With a monthly rolling SIM-only contract, you’re free to change plans, switch networks, or cancel at any time. No restrictive 12- or 24-month commitments.
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How do I activate my SIM Card?When you have received your SIM card, simply click the activate button on your email to activate your SIM card.
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What is a data-only SIM card deal?A data-only SIM deal gives you access to unlimited data, with the option to include calls and texts. Unlimited data SIMs are available in various contract lengths such as 30-day, 12-month, and 24-month options. Perfect for smartphones, tablets, laptops, or as a home broadband alternative.
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Can I use the SIM for my business?Absolutely. Our unlimited data SIM deals are ideal for business users who need reliable, high-speed connections on the go.
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Who would my plan be with?Your plan will be with The SIM Warehouse directly. Choose your network and let us do the rest.
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Can I keep my mobile number?Yes! You’ll just need to request your PAC code from your old network. Simply text the word PAC to 605075. We will then transfer you number over seamlessly to your new plan.
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Do you supply handsets?No. The SIM Warehouse does not supply handsets. We are here for all your SIM only needs.
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Do you support 5G and 4G speeds?Yes, all plans come with full 5G and 4G coverage where available, so you’re always connected at top speed.
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Who do I contact?For any queries contact The SIM Warehouse. You can contact us using our Contact Us Form on our website.
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Am I tied in by fees or restrictions?No. Our SIM plans are contract clear. You pay monthly for what you use, with the freedom to change, pause, or cancel at any time.
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How long does delivery and activation take?SIM cards are delivered within 7 working days. Activation is just a click away, so you’ll be online in no time.
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Is there a difference between SIM, Micro-SIM, Nano-SIM and eSIM?Yes, these refer to different SIM sizes and formats. We offer all types, including digital eSIM, to suit any phone, tablet, or compatible device.
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How do I pay my bill?The SIM Warehouse will take an automatic payment each month using the card details you originally placed your order with.
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How long is the contract?The SIM Warehouse offers three choices of contract terms. 24 Months, 12 Months and Monthly Rolling plans. Choose the best option for you.
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Can I keep my current number?Yes, just request a PAC code from your old provider and transfer your number to your new SIM-only contract quickly and easily.