2 sellers publishing a SIM only contracts price
What SIM only contracts cost in the UK, from published seller prices
A SIM only contract is a term, and the term is the product. Two sellers in this record publish one on the page we read: Vodafone at £23 a month for unlimited data on a 24 month plan, and Lycamobile, which prints 12 and 24 month plans beside its 30 day ladder. The rest of the record is rolling monthly, which is a different thing being sold at a similar number.
- median published unlimited data SIM, per month
- £17.75
- published unlimited SIM prices across the sellers read
- £12.5 to £23
- sellers with an evidenced SIM only contracts price
- 2
Sellers publishing a SIM only contracts price
| Seller | Unlimited data, per month | SIM only contracts page | Source | Checked |
|---|---|---|---|---|
| Lycamobile | £12.5/30 days, the UK Plan Unlimited row on the seller's own ladder | Lycamobile's own priced page | lycamobile.co.uk | September 2026 |
| Vodafone | £23/month, unlimited data, 24 month plan | Vodafone's own priced page | vodafone.co.uk | September 2026 |
Coverage of SIM only contracts is evidenced by the seller's own page at the linked URL, checked on the date shown, never by a marketing claim. The headline figure above is the record's median published unlimited data SIM price, which is the one line comparable across sellers; the SIM only contracts figures themselves are in the table below, each recording what it is per.
What a term actually costs
Add the rises before you compare. Vodafone publishes a £2.50 April increase for pay monthly airtime and data plans, and on its unlimited plan that is £25.50 from 1 April 2027 and £28 from 1 April 2028.
A saving claim is a claim about the term, not about the market. Vodafone publishes Save £288 with a 24-month plan, which is a comparison with its own shorter option.
A rolling monthly plan can be repriced too, but you can leave the month it happens.
The switch is the same either way: you need a PAC or a STAC code, and the old contract ends when the switch completes rather than when you ask.
Cite or embed this figure
The the seller's own published monthly price for an unlimited-data SIM in SIM only contracts was £17.75 in September 2026, across 2 checked network price pages recorded in SIM Only Deals Compare Price Record.
Cite as: "SIM Only Deals Compare Price Record: SIM only contracts", updated 2026-09-10, https://simonlydealscompare.co.uk/deals/sim-only-contracts/.
Download the SIM only contracts price record (CSV), free to reuse with citation.