Best SIM only deals UK 2026
The UK SIM only market has never been more competitive. Budget networks running on major network infrastructure offer EE-quality coverage at a fraction of the price of going directly to EE. Here is the definitive guide to the best SIM only plans available in July 2026.
The best SIM only deals right now
Best for cheapest price — 1pMobile on EE
From £1/month. Pay per use: 1p per minute, 1p per text, 1p per MB. No monthly minimum. Ideal for light users with Wi-Fi at home and work. Running on EE — the UK's best coverage network.
Best for value mid-data — Mozillion 25GB on EE
£8/month. 25GB data, EU roaming included, 30-day rolling. EE's network. This is the strongest value plan in the UK for most moderate users.
Best for eco-conscious users — Ecotalk on EE
From £4/month. Carbon neutral provider, EU roaming included on all plans, 30-day rolling. Plants trees and offsets carbon with every subscription.
Best for heavy data users — Chattr Unlimited on Three
From £12/month. Unlimited data on Three's network — strong 5G in cities, lower rural coverage than EE. Best suited to urban users who stream heavily.
Best for students — Mozillion or Ecotalk
Both offer 30-day rolling plans with EU roaming — essential for a semester abroad or summer travel. No long contract means you can switch when your data needs change.
What to look for in a SIM only deal
Network coverage — always check coverage at your home, workplace and the routes you travel regularly. EE has the best UK-wide coverage.
EU roaming — if you travel to Europe, only plans that explicitly include EU roaming are worth considering. Ecotalk and Mozillion include it. Major networks charge £5–10/day.
30-day rolling vs 12-month — on budget networks the price difference is minimal. Take 30-day rolling for flexibility.
Data allowance — most people overestimate how much data they need. 15–25GB covers typical use including streaming and maps.
How do budget SIM networks compare to the major networks?
Budget MVNOs running on EE give you identical 4G and 5G coverage to EE direct. The only differences are EE-specific perks (BT Sport access, priority network switching) and EE's customer service. For most people these differences do not matter — the signal quality is identical.
A 25GB plan on EE direct costs approximately £28/month. The same coverage and data from Mozillion costs £8/month. That is £240/year saved.
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How to switch to a budget SIM plan
Switching to a cheaper SIM plan takes about 5 minutes. Text PAC to 65075 to get a free code that transfers your existing number. Sign up with your chosen budget network, provide the code, and your number moves across within one working day. Your old contract cancels automatically — no need to call your old provider.
Once switched, your signal comes from exactly the same physical masts as before (on EE-based networks) at significantly lower cost. Most people who make the switch find the experience indistinguishable from their previous major network plan.
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Why compare on GadgetRank?
GadgetRank is an independent UK comparison site — not affiliated with any retailer, recycler or network. Every comparison is based on live price data. There are no paid placements or sponsored rankings. The best current offer appears at the top because it is the best current offer, not because of any commercial arrangement.
All retailers listed on GadgetRank meet minimum quality criteria: Trustpilot score of 4.0 or above, minimum 12-month warranty, battery health guarantee, and devices unlocked to all networks. This baseline means every option on GadgetRank is a trustworthy choice — the comparison is purely about price and any additional perks.
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