Before you start

An unlocked handset, or an eSIM-capable one
A UK address, for a contract
A UK bank account, for a contract Direct Debit

Step-by-step

1
Buy a pay-as-you-go SIM or activate an eSIM on arrival
Available from supermarkets, phone shops and online, with no identity registration required. A UK number in your first hour unlocks bank verification, appointment systems and delivery notifications.
In personWho: YouDay 1
2
Do not attempt a 24-month contract in your first weeks
Contracts run a credit check and require a UK bank account and address. With no UK credit file you will be declined or asked for a large deposit. Rolling one-month SIM-only plans have no credit check and are excellent value.
OnlineWho: You
3
Use a rolling SIM-only plan rather than a handset contract
SIM-only plans with generous data cost a fraction of a bundled handset contract, have no minimum term, and can be switched monthly. Buying a handset outright and taking a SIM-only plan is almost always cheaper than a two-year bundle.
OnlineWho: You
4
Check coverage where you actually go
UK urban coverage is good but the Highlands and much of rural Scotland are patchy, and the four networks differ substantially. If you plan weekends in the hills — and in Scotland you will — compare coverage maps rather than choosing on price.
OnlineWho: You
5
Keep your number when you switch
Text PAC to 65075 and you receive a porting authorisation code by return, valid for 30 days. Switching networks while keeping your number takes one working day by law. Never cancel first.
Mobile appWho: You
6
Sort home broadband early
UK installation typically takes one to three weeks and may need an engineer visit. Order as soon as you have an address, and check whether the property has full fibre — availability varies sharply street by street, including in central Edinburgh.
OnlineWho: You

Documents you’ll need

Nothing at all for pay-as-you-go
UK address and bank details, for a contract
Passport, occasionally requested for a contract

Things most newcomers don’t know

The UK has no SIM registration, unlike most of Europe.

Germany, Spain and France all require identity verification to activate a SIM. The UK requires nothing for pay-as-you-go — you can buy one in a supermarket and use it in the car park. For a newcomer this removes one of the most common first-week frustrations elsewhere.

Source: Ofcom

Text PAC to 65075 — switching keeps your number in one working day.

Ofcom rules require networks to issue a porting authorisation code by text on request and to complete the switch within one working day. You never cancel the old service first. Most people do not know the shortcode and stay on a bad tariff for years.

Source: Ofcom — switching mobile provider

Rolling SIM-only plans are dramatically better value than handset contracts.

A two-year bundled handset contract typically costs far more in total than buying the phone outright and taking a rolling SIM-only plan, and it locks you in with no credit-check advantage. For a newcomer with no UK credit file, the SIM-only route also avoids being declined outright.

Source: community-reported

Highland coverage varies enormously between the four networks.

Scotland's geography defeats mobile coverage in ways England's does not, and the difference between operators in the Highlands and Islands is substantial. If your weekends will involve hills — and living in Edinburgh they probably will — check the specific coverage maps rather than choosing on urban performance.

Source: Ofcom — mobile coverage checker

Common mistakes to avoid

Signing a 24-month handset contract in your first weeks and being declined or overcharged.
Cancelling your old service before requesting a PAC code, and losing the number.
Choosing a network on price without checking Highland coverage.
Assuming full fibre is available without checking the specific address.
Not knowing that pay-as-you-go requires no identity check at all.

Some of this may be out of date. Spotted something inaccurate? Help us keep it right for the next newcomer.