UK SIM-only comparison

Get the SIM for what you need.

Almost every UK network runs on one of the big three — EE, O2 and VodafoneThree — so the signal’s the same, the price and features aren’t. Pick the data and features you want, and it’ll rank the deals that fit by price.

I made this while researching my own SIM upgrade — it now updates itself automatically every morning.

355 deals•26 providers•3 mobile networks
Compare SIM-only deals
Networks compared
1pMobileCMLinkEcotalkLycamobileMeaningful PlanetMozillionNOW MobileParentShieldSpusu UKYour Co-op MobileZoiko MobileSky MobilegiffgaffASDA MobileHonest MobileLebaraSMARTYSuperdrug MobileTalkmobileVOXIiD Mobile
Coverage

Which network each brand runs on

Every provider here uses EE, Virgin Media O2 or VodafoneThree’s masts. Pick the coverage that works where you live, then the cheapest brand on it.

EE networkThe brands that run on it
1pMobile1pMobile
CMLinkCMLink
EEEE
EcotalkEcotalk
LycamobileLycamobile
Meaningful PlanetMeaningful Planet
MozillionMozillion
NOW MobileNOW Mobile
ParentShieldParentShield
Spusu UKSpusu UK
Talkhome MobileTalkhome Mobile
Your Co-op MobileYour Co-op Mobile
Zoiko MobileZoiko Mobile
Virgin Media O2 networkThe brands that run on it
O2O2
Sky MobileSky Mobile
giffgaffgiffgaff
VodafoneThree networkThe brands that run on it
ASDA MobileASDA Mobile
Honest MobileHonest Mobile
LebaraLebara
SMARTYSMARTY
Superdrug MobileSuperdrug Mobile
TalkmobileTalkmobile
ThreeThree
VOXIVOXI
VodafoneVodafone
iD MobileiD Mobile
Worth knowing

A couple of things to check before you buy

Coverage firstStart with signal, not priceEvery budget brand runs on EE, O2 or VodafoneThree’s masts, so coverage is identical — only the price changes. Check what works best where you live, then see the cheapest SIMs on those exact masts.Compare by coverage → The real priceThe price isn’t the priceNetworks quietly raise your bill each spring, so a ‘£10/mo’ deal can cost more than it says. We flag every deal that rises — and the ones that hold their price for the whole term.Deals that hold their price →
Questions

Common questions

What’s the cheapest SIM-only deal right now?

Big allowances (30GB+) start at £4.5 a month, and unlimited data from £14. The list at the top updates daily.

Do I need a contract?

No. Most of the deals here are monthly rolling or pay as you go, so you can leave whenever you like. Only the 12–24 month plans tie you in.

Rolling, pay monthly or pay as you go?

Pay monthly is a 12–24 month contract; rolling renews monthly; pay as you go you top up as you need. We label every deal.

What’s an eSIM?

A SIM built into your phone, with no plastic card. Many UK networks now offer their plans as an eSIM — they’re marked with an “eSIM available” note.

Can a SIM count for a bank-switch bonus?

Yes, if it’s billed by Direct Debit. Talkmobile and iD Mobile qualify; card-billed SIMs like Lebara don’t. See the SIMs you can pay by Direct Debit →

Compare SIM-only deals

Pick your coverage and the data you need, and it’ll show the cheapest deals that fit.

Compare deals

This is an independent comparison, not a whole-of-market one — it covers the networks it is able to track easily, re-checked against their own sites every morning. Networks change deals often, so always confirm the details on the provider’s site before you buy. Links marked * are affiliate links that may earn me a commission at no cost to you; that never changes what you pay or how deals are ranked, which is by price.