1
CHEAPEST OVERALL
Lebara 3 GB — GBP 4.49/mo
Best for: light users on the tightest budget. 3 GB on the Vodafone network with international minutes, 5 GB EU roaming, no annual price rise, no credit check.
Best Cheap UK SIM Under GBP 10 (2026): Top 7 Plans Ranked
Which cheap UK SIM is best?
2
BEST EU CALLS
spusu 5 GB — GBP 4.90/mo
Best for: users who call EU numbers regularly. 5 GB on EE coverage, EU roaming included, inclusive EU international calls, no credit check, eSIM.
3
BEST VODAFONE VALUE
Talkmobile 5 GB — GBP 4.95/mo
Best for: Vodafone-network value users. 5 GB on rolling 1-month plans with EU roaming included. Which? Recommended Provider 2026.
4
SUPERMARKET PICK
Asda Mobile 3 GB — GBP 5/mo
Best for: Asda shoppers. 3 GB on Vodafone, no annual price rise, no credit check. Sold at every Asda store.
5
BEST EU ROAMING
1pMobile 5 GB — GBP 5/mo
Best for: EU travellers on a budget. 5 GB on EE network with free roaming in 46 EU countries. Also runs a classic PAYG at 1p/min, 1p/text, 1p/MB.
6
BEST DATA UNDER GBP 10
SMARTY 15 GB — GBP 6/mo
Best for: mid-data users. 15 GB on Three's network with EU roaming up to 12 GB and unlimited UK calls/texts. No annual price rise.
7
CLUBCARD PICK
Tesco Mobile 6 GB — GBP 6/mo
Best for: Tesco shoppers and families. 6 GB on O2 with Clubcard points, Family Perks, and no mid-contract price rises.
Side-by-side comparison
| Plan | Price | Data | Network | Standout extra |
|---|---|---|---|---|
| Lebara 3 GB | GBP 4.49 | 3 GB | Vodafone | International minutes |
| spusu 5 GB | GBP 4.90 | 5 GB | EE | Inclusive EU calls |
| Talkmobile 5 GB | GBP 4.95 | 5 GB | Vodafone | Which? Recommended |
| Asda Mobile 3 GB | GBP 5 | 3 GB | Vodafone | Sold at Asda stores |
| 1pMobile 5 GB | GBP 5 | 5 GB | EE | Free EU roaming, 46 countries |
| SMARTY 15 GB | GBP 6 | 15 GB | Three | 12 GB EU roaming |
| Tesco Mobile 6 GB | GBP 6 | 6 GB | O2 | Clubcard perks |
How we ranked these plans
We scored every UK SIM under GBP 10 on five dimensions: price per gigabyte, EU roaming bucket, international minutes, annual price-rise policy, and credit-check requirement. Prices verified May 7, 2026. Network coverage scores draw from Opensignal London Mobile Network Experience January 2026.
Frequently asked questions
What is the cheapest UK SIM-only plan in 2026?
Lebara 3 GB at GBP 4.49 is the cheapest UK SIM-only plan with a brand-name MNO host (Vodafone). spusu 5 GB at GBP 4.90 follows. Talkmobile 5 GB at GBP 4.95 runs on Vodafone. Asda and 1pMobile both start at GBP 5 for 5 GB.
Are cheap UK SIMs reliable?
Yes. Cheap UK SIMs are MVNOs that resell space on EE, O2, Vodafone, or Three networks. The radio signal is identical to the parent network. Trade-offs are usually lighter customer support and sometimes slower speed caps on unlimited plans, not coverage gaps.
Which cheap UK SIM has the best EU roaming?
1pMobile includes free EU roaming in 46 countries on its 50 GB plan. Lebara includes 20 GB EU roaming on most plans. Talkmobile and Asda Mobile both include 15 to 20 GB EU roaming. EE-network MVNOs like spusu also include EU roaming.