12-month SIM only deals
12-month SIM only deals are a great way to save money if you don't need a new phone. We've found the best 12-month SIM only deals available on the market.
Why choose a 12-month SIM only deal instead of a 30-day plan?
A 12-month SIM only deal usually costs less each month than an equivalent rolling 30-day plan, because the network rewards you for committing for a year.
The trade-off is flexibility — you're tied in for 12 months — so it suits people who are happy with their handset and want to lock in a lower price.
Can my monthly price go up during a 12-month SIM only contract?
Many UK networks apply an annual price rise, so your bill can increase once during a 12-month term. Ofcom now requires providers to show any mid-contract increase as a clear pounds-and-pence figure before you sign up.
Check the deal's terms for the exact amount, as some smaller networks and SIM only plans hold their price for the full 12 months.
Basics SIM Only
- Price becomes £13.50 on 1 April 2027
Basics SIM Only
- Price becomes £8.50 on 1 April 2027
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Basics SIM Only
- Price becomes £10.50 on 1 April 2027
Basics SIM Only
- Price becomes £9.50 on 1 April 2027
Basics SIM Only
- Price becomes £11.50 on 1 April 2027
Three UNL 12m SIM Only
Three 100GB 15pm 12m SIM Only
Three 12GB 9pm 12m SIM Only
Three 12GB 9pm 12m SIM Only
Three UNL 12m SIM Only
Three 30GB 10pm 12m SIM Only
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