Best SIM-only deals under £10 a month today
Quick answer
The most data you can get for £10.00 a month or less today is 120GB data (5G) from iD Mobile at £10.00 a month on a 12-month plan. The cheapest is Spusu Mobile at £7.90 a month with 30GB data (5G). Prices checked 30 October 2026.
These are the SIM-only plans we list at £10 a month or less, ranked by how much data you get. We show the best plan from each network, so you can compare networks side by side.
| # | Network and data | Monthly | Contract | Minimum-term cost |
|---|---|---|---|---|
| 1 | iD Mobile 120GB data (5G) Unlimited minutes · Unlimited texts · Sold by Mobiles.co.uk | £10.00 | 12-month contract | £120.00 |
| 2 | O2 80GB data (5G) Unlimited minutes · Unlimited texts · Sold by O2 | £10.00 | 1-month plan | £10.00 |
| 3 | giffgaff 80GB data (5G) Unlimited minutes · Unlimited texts · Sold by giffgaff | £10.00 | 18-month contract | £180.00 |
| 4 | Vodafone 70GB data (5G) Unlimited minutes · Unlimited texts · Sold by Mobiles.co.uk | £9.00 | 12-month contract | £117.00 |
| 5 | Spusu Mobile 30GB data (5G) Unlimited minutes · Unlimited texts · Sold by Spusu | £7.90 | 1-month plan | £7.90 |
| 6 | Sky Mobile 25GB data (5G) Unlimited minutes · Unlimited texts · Sold by Sky | £10.00 | 24-month contract | £240.00 |
Prices include VAT and can change. Check the price on the retailer’s site before you buy.
Frequently asked questions
What is the cheapest SIM-only deal under £10 today?
The most data you can get for £10.00 a month or less today is 120GB data (5G) from iD Mobile at £10.00 a month on a 12-month plan. The cheapest is Spusu Mobile at £7.90 a month with 30GB data (5G). Prices checked 30 October 2026.
Will a SIM-only plan work in my phone?
Yes, if your phone is unlocked. Phones bought outright are usually unlocked, and most networks will unlock an old contract phone for free.
Can I keep my number?
Yes. Text PAC to 65075 to get your code, then give it to your new network. Our guide to keeping your number explains how.
How do you rank these deals?
On price alone, using the live deals we compare from UK networks and retailers. Monthly prices are what you pay after any introductory offer ends. We may earn commission if you buy, but it never changes the order. See how we make money.