Eight little brands, four big landlords, and the smartest money in UK mobile — if you follow three rules first.
Tesco Mobile, giffgaff, SMARTY, iD Mobile, VOXI, Lebara, 1pMobile — none of them owns a single mast. Each rents one of the big four's networks wholesale and sells it cheaper under its own name. Done knowingly, it's the smartest money in UK mobile.
| Brand | Rides on | Party trick |
|---|---|---|
| Tesco Mobile | O2 | Years of top satisfaction scores; family controls |
| giffgaff | O2 | No contracts at all; community support |
| Sky Mobile (own page) | O2 | The data piggybank |
| SMARTY | Three | One-month plans; no rise machinery exists |
| iD Mobile | Three | Stubbornly low prices, year after year |
| VOXI | Vodafone | Chosen apps don't touch your data |
| Lebara | Vodafone | International minutes baked in |
| 1pMobile | EE | Pay-per-use on the biggest network |
Pairings as generally understood at July 2026 — always confirm with the brand itself.
Marketing carries no bars. Run the coverage check against the host network.
Wi-Fi Calling, eSIM and 5G differ between brands on the very same masts. Never assume host parity.
Your contract lives with the name on your bill. A Tesco Mobile question is Tesco Mobile's job — even though every bar is O2's.
Ring or WhatsApp and ask your question out loud — coverage, switching, a deal you're not sure about, a bill that stalled, a call that smelt fishy. We'll talk it through in plain English.
Calls: standard landline rate (020), usually inside your inclusive minutes. WhatsApp: free on your data. We give general guidance only — we can't open or touch any network account, and we NEVER ask for passwords, one-time codes, banking or card details.