16 deals from our partner network
The best SIM only deal depends on what you need. For unlimited data with no contract, Chattr at £15 per month is our pick and the cheapest unlimited plan we track. For a large allowance on a small budget, TalkMobile's 100GB at £9.95 per month on a 12 month plan leads the market, with half price for the first 3 months. The cheapest plan on this page is TalkMobile's 15GB at £5.95 per month. All prices are listed in the deals below and checked against each provider's own site.
Our top picks
Four deals that lead their category on price and terms, from the 16 we track across our partner network.
- Unlimited data, calls and texts
- No mid contract price rises
- 99% 4G and 5G UK coverage
- 100GB of data under £10 a month
- Half price for the first 3 months
- Runs on the Vodafone network
- 90GB of data at £10 ongoing
- £5 a month for the first 3 months
- Runs on the Three network
- 100GB with unlimited calls and texts
- Vodafone's own network with 5G
- Rises to £26.50 from April 2027
More deals worth considering
Strong plans that sit just behind our top picks, including the lowest priced plan we track and the best value on a large allowance.
- 15GB of data under £6
- Leave at the end of any month
- Runs on the Vodafone network
- 50GB with unlimited calls and texts
- No mid contract price rises
- Leave whenever you choose
- Unlimited data with 5G included
- Price locked for the full 12 months
- Up to 5% back in your Asda Rewards Cashpot
- 80GB of data under £9
- Leave at the end of any month
- Runs on the Vodafone network
- Profits fund renewable energy
- Runs on the EE network
- Leave whenever you choose
- 75GB, tripled from 25GB in a data boost
- 20 social, music and video apps do not use your data
- Price locked while you keep the plan
Deals for specific needs
International calling, light use, premium networks and green picks. The right SIM depends on how you actually use your phone.
- Unlimited data with 5G included
- Cheaper than the 12 month version at £22
- Up to 5% back in your Asda Rewards Cashpot
- 100 international minutes included
- The price shown is the ongoing price
- Runs on the EE network
- Only pay for what you use
- Credit lasts up to a year
- Runs on the EE network
- Unlimited data, 5G and hotspot use
- Vodafone network speeds
- Leave whenever you choose
- O2 Priority rewards included
- Rises to £25.50 from April 2027
- You pay a premium for the network brand
- 25% of net profits go to rewilding nature
- Runs on the Vodafone network
- Rolling or fixed term, your choice
How we pick these deals
We track the SIM only plans of 13 UK providers and check every price by hand against the provider's own site. Each deal above shows the price a new customer pays today, the real contract length, and the network the SIM runs on. We never list handset contracts. The date on each card shows when we last checked it.
We may earn a commission when you switch or sign up through links on this page. It’s paid by the provider and never affects the price you pay. Read more about how we earn revenue.