10 Best Pre Paid Unlimited Data Only Sim Card in The UK

Last updated on 06/07/2025

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EE Unlimited Data SIM – Uncapped 5G Speeds – Preloaded EVERY MONTH Until 8th NOVEMBER 2026 – No Contract – Plug & Play for Business Broadband, Routers & Phones

15% OffFree Shipping

Why We Love It

Unlimited data until 2026.
Effortless plug and play setup.
Reliable connectivity with EE network.

Main Highlights

PRELOADED DATA - Unlimited Data until 8th NOVEMBER 2026 for a one-off payment.
EFFORTLESS PLUG & PLAY - Experience seamless 4G & 5G connectivity, no initial setup is required.
UNMATCHED EE NETWORK RELIABILITY - Depend on the UK's leading network for consistent business connectivity.
UNIVERSAL DEVICE COMPATIBILITY - Optimised for Smartphones, Tablets, Laptops, Mobile Wi-Fi Dongles, Routers, IoT Devices, Smart Meters, Vehicles, GPS Trackers, Smart Home Devices & Security Cameras.
DEDICATED SUPPORT - Gain peace of mind with our dedicated business customer support, ready to assist you whenever needed. Please reach us at support@scancom.co.uk with the sim number and order reference.
NO CONTRACTS - Benefit from our data services without the burden of contracts or recurring fees.
VERSATILE TRIPLE CUT SIM - Our all-in-one sim card fits any Standard, Micro, and Nano size device.
EXCLUSIVE UK DATA-ONLY - Tailored for data usage with a 600GB/month fair use UK-only data allowance; EE reserve the right to suspend the sim if the allowance is exceeded. This Sim card does not support calls, texts, or roaming.
This item is tailored for business customers. If your order is not in the name of company / non profit registered at companies house or an Amazon business customer , by purchasing, you affirm your status as a self-employed individual and consent to being listed as a business customer with Scancom Distribution Ltd, a necessary step to complete your purchase.
Sims cannot be ported/transferred, promotions are non-renewable, and support for pre-registered sims is available exclusively via email. Please reach us at support@scancom.co.uk with the sim number and Amazon order reference.

Three Unlimited Data SIM – Uncapped 5G Speeds – Preloaded EVERY MONTH Until 8th JULY 2027 – No Contract – Plug & Play for Business Broadband, Routers & Phones

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Why We Love It

Unlimited data until 2027.
Effortless 4G and 5G connectivity.
No contracts or recurring fees.

Main Highlights

PRELOADED DATA - Unlimited Data renewed monthly until 8th July 2027 for a one-off payment.
EFFORTLESS PLUG & PLAY – Enjoy seamless 4G and 5G connectivity with no initial setup required.
THE UK’S FASTEST 5G NETWORK – Stream, play, watch, work & explore with the power of 5G.
UNIVERSAL DEVICE COMPATIBILITY - Optimised for Smartphones, Tablets, Laptops, Mobile Wi-Fi Dongles, Routers, IoT Devices, Smart Meters, Vehicles, Drones, GPS Trackers, Smart Home Devices & Security Cameras.
DEDICATED SUPPORT - Gain peace of mind with our dedicated customer support, ready to assist you whenever needed.
NO CONTRACTS - Benefit from our data services without the burden of contracts or recurring fees.
VERSATILE TRIPLE CUT SIM - Our all-in-one sim card fits any Standard, Micro, and Nano size device.
EXCLUSIVE UK DATA-ONLY - This Sim card does not support calls, texts, or roaming. There is a fair use policy of 1000GB per month.
Sims cannot be ported/transferred, promotions are non-renewable, and support for pre-registered sims is available exclusively via support@scancom.co.uk
This item is tailored for business customers. If your order is not in the name of company / non-profit registered at companies house or an Amazon business customer, by purchasing, you affirm your status as a self-employed individual.

Vodafone 5G Unlimited Data SIM Preloaded for 6 months - Perfect for unlocked Phones, Routers, Tablets, and Wifi Dongles - Activate anytime when you receive the SIM.

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Why We Love It

Enjoy 6 months uninterrupted connectivity.
Compatible with multiple devices.
Option for monthly data refresh.

Main Highlights

ANYTIME ACTIVATION - Activate your Sim by scanning the supplied QR Code and enjoy 6 months of 4G & 5G data. We will activate your sim within 1 business day.
DATA RENEWAL OPTION - Extend your data usage beyond the initial term with the option to renew at the end, ensuring continuous connectivity without interruption.
UNIVERSAL DEVICE COMPATIBILITY - Optimised for Smartphones, Tablets, Laptops, Mobile Wi-Fi Dongles, Routers, IoT Devices, Smart Meters, Vehicles, Drones, GPS Trackers, Smart Home Devices & Security Cameras.
DEDICATED CUSTOMER SUPPORT - For any connection queries, our customer support team at Scancom is ready to assist you. Please contact support@scancom.co.uk.
NO CONTRACTS - Benefit from our data services without the burden of contracts or recurring fees.
VERSATILE TRIPLE CUT SIM - Our all-in-one sim card fits any Standard, Micro, and Nano size device.
EXCLUSIVE UK DATA-ONLY - Tailored for data usage with a 600GB/month fair use UK-only data allowance. This Sim card does not support calls, texts, or roaming.
*Breach of fair usage policy: Data usage where users regularly tether to 12 or more devices or have used 600GB of data twice within a 6-month period. This includes fraudulent, abusive, illegal, nuisance, or outside normal commercial practice usage.

SimRush EE Unlimited Data SIM Card Preloaded for 30 Days. Prepaid, not Pay as You go or a Contract. Comes with Unlimited Data. All on the UK's biggest 5G and 4G Network.

Why We Love It

Unlimited data for versatility.
Preloaded, stress-free operation.
Uncapped speedy downloads.

Main Highlights

Unlimited Data in the UK. Perfect for your mobile phone, iPad or a mobile office. The SIM is compatible with any unlocked phone or mobile travel router with a SIM card slot, including in a 4g router or 5g modem.
No Stress! Preloaded for 30 days of use, not Pay As You Go. No Hidden Charges & No Contract. Optional Renewal Available. Activated 48hrs after SIM despatch.
Uncapped Download Speeds on The UK's biggest Network. Perfect for a Portable Wifi device, 4 & 5G hotspot, the 5GEE router, as well an unlocked cell, smartphone or any other cellular or mobile hotspot device.
Packaged for all sizes free of charge: This SIM is suitable for Standard, Micro, Nano sizes, no need for a SIM card adapter

USA Canada Mexico T-Mobile SIM Card | Unlimited 5G/4G LTE Data in USA + 5GB of 5G/4G Data in Canada and Mexico | Unlimited Calls & SMS Among US, Canada & Mexico (21 Days) | Refillable!

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Why We Love It

Unlimited 5G Data Nationwide.
Supports Hotspot Tethering.
Unlimited Calls & Texts.

Main Highlights

USA local SIM card. Uses T-Mobile network. Good reception and signal. NO contract or ID authentication needed!
Data plan: Unlimited 5G | 4G internet Data in USA nation-wide + 5GB of 5G/4G LTE High-Speed Data in Canada & Mexico. | Données Internet 5G/5G illimitées aux États-Unis dans tout le pays + 5 Go de données haut débit 5G/4G LTE au Canada et au Mexique.
Phone calls and Texts: Unlimited Calls & Texts among US, Canada and Mexico. | Appels et SMS illimités entre les États-Unis, le Canada et le Mexique.
Validity: Valid for 21 days upon activation. Plan is refillable.
Sim Card Size: Standard/ Micro/ Nano all size tri-cut SIM. The sim card fits in any cell phone devices physically.
Activation: Activation could take up to 24 hours. Please submit the request at least 2 days in advance. Your SIM card will be activated on your scheduled date (North America Central Time Zone).
Smart phones ONLY. Samsung A series (A40, A50, A51, A70 etc.) and China brand (HUAWEI, OPPO, XIAOMI etc) & SONY are NOT fully compatible. Plus,🚨please make sure your device works on T-Mobile's network, Band 2 and Band 4, otherwise it won't be working.🚨
Weak signal strength regions: National Parks, Rural areas, Montana, North Dakota, South Dakota, Nebraska, West Virginia, Alaska.
Contact us anytime when you need assistance!

SMARTY Unlimited Data only SIM. 1 month plan, No contract, EU Roaming

43% OffFree Shipping

Why We Love It

Unlimited data for £20/month.
EU roaming included.
No speed caps.

Main Highlights

Unlimited data-only SIM for just £20 a month.
You’re free to leave at the end of the month: Commitment-free with no long contract.
No annual price rises: You won’t be shocked with a higher bill at the end of the month.
EU roaming up to 12GB included: Enjoy your EU travels without being hit with extra charges.
Switch effortlessly: Keep your existing number, no need to remember a new one.
No credit check: No hassle.
SIM fits any unlocked 4G or 5G device, not compatible with 3G devices.
How to activate this SIM: Head on over to smarty.co.uk/activate, choose the plan you want and pay on activation. Auto-renew set up for ease, you can pause, change, or cancel the plan on your dashboard.

EE 150GB Data Sim includes £20 pre-paid credit, 150GB Data, Unlimited Minutes & Unlimited Texts

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Why We Love It

Generous 50GB data allotment.
500MB free on extra packs.
Unlimited calls and texts.

Main Highlights

150GB Data Included, lasts up to 30 days
The sim you receive may be in old style packaging but will include the data allowances as per the description
Roaming is not included
Free Boost - Buy 2 packs and get 2GB free
Unlimited calls and texts
Allowances last up to 30 days from activation
If the purchased pre-paid credit is not immediately available when the sim is put into the device, please message us and include the mobile number as detailed on the back of the packaging.
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.

SMARTY Unlimited SIM Only 1-month flexible plan

20% OffFree Shipping

Why We Love It

Flexible plans, cancel anytime.
EU roaming included with plan.
No speed caps or restrictions.

Main Highlights

Unlimited data, calls and texts SIM for just £18 a month.
You’re free to leave at the end of the month: Commitment-free with no long contract.
No annual price rises: You won’t be shocked with a higher bill at the end of the month.
EU roaming up to 12GB included: Enjoy your EU travels without being hit with extra charges.
Switch effortlessly: Keep your existing number, no need to remember a new one.
No credit check: No hassle.
SIM fits any unlocked 4G or 5G device, not compatible with 3G devices.
How to activate this SIM: Head on over to smarty.co.uk/activate, choose the plan you want and pay on activation. Auto-renew set up for ease, you can pause, change, or cancel the plan on your dashboard.
The packaging you receive may differ from the image displayed but the data you receive will be as detailed above

Lebara UK Unlimited Data Pay As You Go SIM Card, Unlimited UK Minutes & Texts, 100 International minutes for £25

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Why We Love It

Pre-loaded plan ready to use.
Cancel or change anytime.
Keep your existing number.

Main Highlights

Plan is Pre-loaded and ready to use
1 month plan. No contract. Change or cancel anytime
50% Off for 3 months when you renew
No Credit Check
Keep your existing number

T-Mobile Brand USA Prepaid Travel SIM Card Unlimited Call, Text and 4G LTE Data (for use in USA only) (for Phone use only. NOT for Modem/WiFi Devices) (30 days)

17% OffFree Shipping

Why We Love It

Unlimited Talk, Text, Data.
Convenient advance activation.
Dedicated customer support.

Main Highlights

PLEASE READ ALL INSTRUCTIONS BEFORE YOU PURCHASE. For use in unlocked GSM phones only. T-Mobile has made network upgrade. Most of the older phone models and international phones including 2G and 3G will not work at all. Enter the IMEI on the link below. Dial *#06# to get your phone's IMEI. Please check your phone compatibility here: www.t-mobile.com/resources/bring-your-own-phone
This SIM card is not yet activated. Activation may take up to 24 hours. To save time, we suggest you schedule your activation in advance. Please send the activation request
Unlimited Talk and Text in USA. Unlimited High speed 4G LTE Data in USA. Unlimited Hotspot/Tethering at 3G using your mobile phone. Under Fair Usage Policy, T-Mobile may slow slow down data speed after 50GB of usage.
This SIM Card WILL NOT WORK IN MODEM/WIFI DEVICES. The SIM Card only works in unlocked GSM Phones. The mobile number cannot be ported out (cannot be transferred to another carrier).This SIM Card is for use in the USA only. Cannot be used outside the USA.
HAVE A QUESTION? Live Support is available. We value our customer's trust in our products. If you have any queries, our Support Team is available 15 hours a day (6AM to 9PM Pacific Standard Time), 7 days a week. Send us message via Amazon. We will do our best to make things right for you.

8.7

Excellent

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We scanned 481 products

We reviewed these offers relevant to the Pre Paid Unlimited Data Only Sim Card within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Scancom, SimRush, SIM2ROAM, SMARTY, EE, Lebara, T-Mobile, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Pre Paid Unlimited Data Only Sim Card in the market, we considered we took a deep dive into 2406 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is EE Unlimited Data SIM – Uncapped 5G Speeds – Preloaded EVERY MONTH Until 8th NOVEMBER 2026 – No Contract – Plug & Play for Business Broadband, Routers & Phones. We love many things about this product by Scancom. What sets it apart from the competition is Unlimited data until 2026. , Effortless plug and play setup. , Reliable connectivity with EE network. .
The best value product for most shoppers and where user satisfaction is continuously the highest is Three Unlimited Data SIM – Uncapped 5G Speeds – Preloaded EVERY MONTH Until 8th JULY 2027 – No Contract – Plug & Play for Business Broadband, Routers & Phones by Scancom based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Pre Paid Unlimited Data Only Sim Card and the best cost-to-value ratio is SMARTY Unlimited Data only SIM. 1 month plan, No contract, EU Roamingat SMARTY with a 43% discount.
Our list of the best Pre Paid Unlimited Data Only Sim Card is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Pre Paid Unlimited Data Only Sim Card in The UK

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We scanned 481 products

We concluded that: