Compare SIM only deals.

Save on a SIM only contract by comparing the best deals across a range of UK networks.

Your guide to comparing SIM only deals.

Looking for the best SIM only deals? Whether you want unlimited data, the lowest possible monthly cost, or flexibility with a 30-day rolling plan, we’ve got you covered.

Keeping things SIM-ple.

Why choose a SIM only deal?

SIM only plans are perfect if you’re happy with your current phone or have already bought a SIM free device. Unlike traditional phone contracts, SIM only contracts don’t tie you to a handset, giving you more flexibility and often saving you money

Lower monthly costs.

No need to pay for a phone, just your data, calls, and texts.

More flexibility.

Choose from 30-day, 12-month, or 24-month SIM contracts.

Better value for data.

Many networks offer larger data allowances compared to phone contracts.

Easy to switch.

Keep your number and move between networks with a simple PAC code.

Compare the best SIM only deals from the UK’s top networks.

We make it easy to compare SIM only plans so you can find the right deal based on your budget and data needs. Here’s a look at what some of the UK’s most popular SIM only networks offer:

ASDA Mobile

ASDA Mobile.

Affordable plans on Vodafone’s network.

  • - Great value SIM only contracts with low-cost data plans.
  • - Runs on Vodafone’s reliable network with 99% UK coverage.
  • - No credit checks, making it ideal for those with limited credit history.
Giffgaff

Giffgaff.

Flexible, contract-free SIM only plans.

  • - Flexible best SIM deals with no contracts – all plans are rolling 30-day options.
  • - Uses the O2 network, offering wide UK coverage.
  • - Unlimited UK calls and texts with most plans.
ID Mobile

ID Mobile.

Budget-friendly SIM plans with data rollover.

  • - Some of the best SIM contract deals with great value on high-data plans.
  • - Runs on Three’s network, offering 5G at no extra cost.
  • - Data rollover lets you keep unused data for the next month.
Lebara

Lebara.

Great for international calls with no credit checks.

  • - Perfect for international callers with free minutes to 41 countries.
  • - 30-day rolling plans with no contracts or credit checks.
  • - Powered by Vodafone’s network for reliable UK coverage.
O2

O2.

Premium SIM plans with rewards and extras.

  • - Premium SIM only contracts with access to O2 Priority rewards.
  • - Customisable plans with the option to add extra perks.
  • - 5G coverage in major UK towns and cities.
SMARTY

SMARTY.

Simple, no-nonsense SIM only plans.

  • - One of the best SIM only deals for unlimited data at budget prices.
  • - No contracts – all plans are flexible 30-day rolling options.
  • - Runs on Three’s 5G network for fast speeds.
Spusu

Spusu.

A newer UK network with data rollover.

  • - A newer network in the UK, offering simple and affordable plans.
  • - Data rollover means you never lose unused data.
  • - Uses EE’s strong UK network for excellent coverage.
Sky Mobile

Sky Mobile.

Ideal for Sky customers with data rollover.

  • - Great if you’re a Sky customer, with data that rolls over for up to 3 years.
  • - Powered by O2’s network for strong nationwide coverage.
  • - Exclusive discounts for Sky TV and broadband customers.
Talkmobile

Talkmobile.

Low-cost Vodafone-backed SIM plans.

  • - Low-cost SIM contract deals powered by Vodafone’s network.
  • - No credit checks required on some plans.
  • - Simple, budget-friendly pricing.
Three

Three.

Big data deals with 5G included.

  • - One of the best SIM contracts for unlimited data and 5G.
  • - 12-month and 24-month plans offer big savings.
  • - Personal hotspot and tethering included in most plans.
Vodafone

Vodafone.

Reliable coverage with entertainment perks.

  • - Strong UK coverage with extensive 5G roll-out.
  • - Includes entertainment extras like Spotify or Amazon Prime on selected plans.
  • - Flexible contract lengths, including 30-day, 12-month, and 24-month options.
VOXI

VOXI.

Unlimited social media with flexible plans.

  • - Ideal for social media lovers with unlimited data for TikTok, Instagram, and more.
  • - 30-day rolling plans with no long-term contracts.
  • - Powered by Vodafone for reliable network coverage.
SIM Only

How to find the best SIM only contract for you.

Not sure which SIM only plan to choose? Here’s what to consider:

01

Monthly cost.

Set your budget and filter deals accordingly. Whether you need the best SIM only deals under £10 or premium plans with unlimited data, we compare them all.

02

Data allowance.

From SIM only contracts with 1GB data to unlimited data plans, choose the right level for your usage.

03

Contract length.

Want the flexibility of a 30-day rolling contract? Or are you happy to commit to a 12-month or 24-month SIM contract deal for better value?

04

Network coverage.

Make sure the provider you choose has strong coverage in your area. All the networks we list use well-established UK infrastructure

SIM only deals FAQs.

Got questions about SIM only deals? We’ve answered the most common queries to help you find the best plan for your needs

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