30 day SIM only deals

Generally not, and this is one of the real advantages of going rolling. Spusu, Asda Mobile, Lebara, Lycamobile, Smarty, and 1pMobile all offer no credit check options at this contract length. Some networks such as O2 and Vodafone may still run a soft check, but approval rates on 30-day contracts are higher than on longer deals because the financial commitment is lower. For a broader view, see our no credit check SIM only deals page.

Spusu at £3.90 a month is the pick. You get 3GB of data, 500 minutes, 500 texts, 5G, free EU roaming, no credit check, and no annual price rises on EE's network. For a rolling monthly deal that's a strong package, and the no annual price rises commitment is worth paying attention to. Your bill stays the same for as long as you keep the plan, which not every network can say. If you need more data, Spusu's 5GB plan at £4.50 a month keeps all the same benefits and adds unlimited minutes and texts. Before signing up on any rolling contract, it's worth knowing how mid-contract price rises work, as some networks apply annual increases even without a fixed term.

Watch out for promotional pricing

Lebara has two 5GB deals worth flagging. One is priced at £4.50 a month, the other at £5.00, and both drop to £1.49 a month for the first three months if you use voucher code LEBARA5. That's a good headline rate, but make sure you're comfortable with the standard price before you sign up, as that's what you'll be paying from month four onwards. Lycamobile also has a 5GB deal at £5.00 a month with a promotional rate of £2.50 for the first three months, so the same principle applies.

Yes, though not every network supports them. Spusu, Lycamobile, Asda Mobile, and 1pMobile all have eSIM-compatible 30-day deals available. Use the eSIM filter above to narrow things down, or browse the full range on our eSIM deals page. If you're not sure whether your phone supports eSIM, our guide to what an eSIM is and which UK networks support them is a good starting point.

Most of the deals here include 5G. Whether you can actually access it depends on your handset and where you live, and our network coverage guide is useful if you want to compare coverage before committing.

A 30-day deal gives you maximum flexibility but usually costs a little more per month than an equivalent 12-month SIM only deal or 24-month SIM only deal for the same allowance. If you're between phones, waiting to see if your situation changes, or you simply don't want to be tied in, the extra monthly cost is worth it. If things are more settled, locking in for 12 or 24 months will usually get you a better rate for the same data.

By default, deals are sorted by lowest monthly price. You can change the sort order at any time using the controls above the listings and filter by data allowance, contract length, minutes, and eSIM availability. All deals shown are updated automatically. SIM Only Finder is an Ofcom-accredited UK mobile comparison site and earns a commission on deals taken out via our links. This does not affect how deals are ranked.