Mobile and home internet in Britain: how to pay less and avoid roaming rip-offs

It is easy to pay twice as much as you need to for mobile and home internet in Britain — simply by staying on an old contract out of habit. Here is how to pay less: which plan to pick, who qualifies for social tariffs, and how to call and use data at home, in Britain and on trips home without a roaming rip-off.

SIM-only instead of a phone contract

If you already have a phone, SIM-only is almost always cheaper than a “phone on instalments + airtime” contract. Rolling monthly plans (30 days) don’t tie you down — you can leave any time. Cheap networks — Giffgaff, SMARTY, Lebara, Lyca, VOXI, iD Mobile, 1pMobile — run on the big three’s masts but cost noticeably less: big-data plans often come out at £6–12. Many are sold with no credit check, which suits newcomers.

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EU roaming: choose your network in advance

For anyone flying home to the Baltics, Romania, Hungary, Slovakia or Moldova, roaming is the biggest overpayment. After Brexit the networks split. Free EU roaming included (within a cap): O2 (around 25GB), iD Mobile (your full allowance), SMARTY (up to 12GB), 1pMobile (up to 14GB), Lebara and Giffgaff (smaller caps). Daily charge: EE and Vodafone about £2.70–2.75 a day, Three about £2.75 (except long-standing customers), VOXI via paid passes. The takeaway: if you travel to the EU, pick a SIM with roaming included — one trip pays for the switch.

Home internet: don’t overpay after the deal ends

The main trap is the price after the initial term. Providers lure you with a low price for 12–18 months, then it jumps. Set a reminder for the contract end and renegotiate or leave. Since 2025 a rule applies: a mid-contract rise can no longer be hidden behind “inflation plus a percentage” — the amount must be stated in pounds up front, before you sign. Full fibre is now often no dearer than old copper and much faster — when you move, check whether it’s available at the address.

Social tariffs: if you’re on benefits

On Universal Credit, Pension Credit, JSA, ESA or Income Support? You qualify for social tariffs — cheap internet and mobile with no drop in quality. Home internet: BT Home Essentials about £15 a month (nationwide), Virgin Media Essential about £12.50, Hyperoptic Fair Fibre from £12, Community Fibre (London) about £12.50. Mobile social tariffs: O2 Essential about £10 (EU roaming included), SMARTY about £12 unlimited, EE Basics about £12. On social tariffs, mid-contract rises and exit fees are banned. The provider re-checks eligibility once a year.

How to switch without losing out

Switching is easier now. For home internet there is One Touch Switch: you approach the new provider and it moves you and closes the old contract — no double billing, no gap. For mobile, your number ports with a PAC code (text “PAC” to 65075); broadband uses a STAC code. Compare only through Ofcom-accredited comparison services, and don’t forget concessions for pensioners and students.

Useful apps

Your network’s app (Giffgaff, SMARTY and others) shows data use and what’s left of your allowance — that protects you from surprise charges. For trips home, eSIM apps such as Airalo are handy: local data abroad for a couple of pounds with no physical SIM, if your phone supports eSIM. Ofcom-accredited comparison tools help check home internet at your address. We’ll add services like these to our “Technology” section with a note on why they help.

This is a reference, not financial advice: tariffs, caps and terms change often. Check exact figures and the list of social-tariff providers at ofcom.org.uk and with the providers themselves.