Keep UK Number Abroad (2026): Get Bank Codes Without Roaming Bills
If you searched for how to keep UK number abroad, the answer is simple: keep your UK SIM in your phone for calls and bank security texts, and add a travel eSIM for all your mobile data. You keep receiving every code from your bank, HMRC and the DWP, while you pay local prices for data instead of UK roaming rates. This guide shows you the exact setup, step by step, for holidays and for living abroad long term.
Losing access to a UK number is one of the most common problems for British expats. Banks and government services send one-time security codes by text message, and without your UK number those codes never arrive. Setting things up correctly before you leave saves a lot of stress later.
Get a Saily eSIM for Your Trip
Keep UK Number Abroad: The Dual-SIM Setup
Most modern phones can run two lines at once: a physical SIM and an eSIM. You keep your UK SIM in the phone as your number for calls and texts, and you add a travel eSIM as your mobile data line. The phone shows both lines in its settings, and you choose which one handles data.
With this setup, your bank texts, HMRC codes and calls from family still reach your UK number. At the same time, maps, WhatsApp, banking apps and browsing run on the eSIM at local prices instead of UK roaming rates.
This is the most reliable way to keep UK number abroad access without paying for daily roaming passes. It works for a two-week holiday and for expats who live abroad full time.
Keep UK Number Abroad Step by Step
Step 1: Check That Your Phone Supports eSIM and Is Unlocked
Most iPhones from the iPhone XS onward and most Samsung Galaxy phones from the S20 onward support eSIM alongside a physical SIM. Your phone must also be unlocked to accept an eSIM from another provider, so ask your UK network to unlock it if you bought it on contract.
Step 2: Install a Travel eSIM Before You Leave
Buy a travel eSIM for your destination and install it while you are still at home on WiFi. Give each line a clear label in your settings, such as UK Number and Travel Data, so you never mix them up.
Step 3: Set the eSIM as Your Data Line
In your phone settings, choose the travel eSIM for mobile data and turn on data roaming for that line only. Set your UK line as the default for calls and text messages.
Step 4: Turn Off Data Roaming on Your UK SIM
This step stops surprise bills. With data roaming off on the UK line, it cannot use mobile data abroad, but it still receives calls and text messages, including your bank codes. On most UK networks, receiving texts abroad is free, but check with your provider before you travel.
Step 5: Test Before You Need It
Ask your bank app to send a test code, or text yourself from another phone, while you are still at the airport. If the code arrives on the UK line while your data runs on the eSIM, the setup is complete.
Saily for trips and holidays, Holafly for unlimited data when living abroad
Which Travel eSIM to Use When You Keep UK Number Abroad
Saily is the best choice for holidays and short trips. It sells fixed data plans at low prices in more than 200 destinations, and it is built by Nord Security, the company behind NordVPN. It also includes an ad blocker and web protection at no extra cost, and our Saily eSIM review covers prices and speed tests.
Holafly is the better choice if you use a lot of data or stay abroad for weeks at a time. Every Holafly plan includes unlimited data for the number of days you choose, and support runs 24/7 by live chat and WhatsApp. Our Holafly review explains the fair-use and hotspot limits.
If you split your time between several European countries, our guide to the best eSIM for Europe compares regional plans. Heading further afield, our best eSIM for Thailand guide covers one of the most popular destinations for British expats.
Keep UK Number Abroad Long Term: Stop It Being Deactivated
Short trips are easy, but expats need to keep UK number abroad for years, and the risk is that your network closes a number it sees as unused. Many pay-as-you-go SIMs are deactivated after several months without chargeable use, so check your network’s exact rules before you move.
Use the number regularly. A small top-up, a short call or a single chargeable text every few months is usually enough to keep a pay-as-you-go number alive. Put a reminder in your calendar so you never forget.
Consider a low-cost SIM-only plan. A cheap monthly SIM-only plan avoids any risk of deactivation and keeps your number active for as long as you pay. If your current contract is expensive, you can move your number to a cheaper provider with a PAC code before you leave.
Keep the SIM in a working phone. Some expats keep their UK SIM in a second, older phone. That works, but a single dual-SIM phone with a travel eSIM is simpler and means you never miss a bank code.
Keep UK Number Abroad for WhatsApp
Your WhatsApp account is linked to your phone number, so it keeps working abroad on eSIM data as long as you still have the number. Family and friends can reach you on the same WhatsApp contact they have always used.
The risk comes when you change phones or reinstall WhatsApp. WhatsApp verifies your account with a code sent to your number, so a cancelled UK number can lock you out. That is one more reason to keep UK number abroad active rather than letting it lapse.
Turn on two-step verification in WhatsApp settings as an extra safeguard. If WhatsApp calls are restricted where you live, such as in the UAE, our guide to the eSIM for Dubai explains why a VPN is still needed for calls.
What If Bank Codes Still Do Not Arrive Abroad?
Sometimes codes are delayed by the local network you are roaming on. Restarting the phone, switching the UK line to a different roaming network in your settings, or waiting a few minutes usually fixes it.
Many UK banks now offer app-based approval instead of SMS codes, and that is worth switching to before you leave. Our guides to Monzo not working abroad and Starling Bank not working abroad cover the most common banking problems for British expats.
The National Cyber Security Centre recommends keeping two-step verification switched on, so do not disable it just because you are abroad. When you keep UK number abroad, you stay secure without being locked out.
Roaming Passes vs a Travel eSIM
UK networks sell daily roaming passes, but daily charges add up quickly on longer trips, and fair-use limits can apply when you stay abroad for a long time. The Ofcom website explains your rights as a UK mobile customer travelling abroad.
A travel eSIM is usually much cheaper for data, because you pay local rates for a plan sized to your trip. That is why the cheapest way to keep UK number abroad is to use it only for calls and texts, and let the eSIM handle the data.
Pair Your Setup With a VPN for UK Banking and TV
Your UK number solves the bank code problem, but it does not give you a UK internet connection. Many UK banking apps flag foreign IP addresses, and BBC iPlayer, ITVX and Channel 4 block viewers outside the UK. A VPN with UK servers fixes both, and our guide to the best VPN for UK expats explains how.
NordVPN and Proton VPN both run over eSIM data like any other connection. Together with your UK number and a travel eSIM, you have the complete expat setup in one phone.
Moving Abroad Permanently: Your Checklist
- Unlock your phone and confirm it supports eSIM alongside a physical SIM
- Move to a cheap SIM-only plan or set reminders to top up your pay-as-you-go number
- Switch your banks to app-based approval where they offer it
- Turn on WhatsApp two-step verification before you leave
- Install a travel eSIM for your first weeks, then decide on a local plan
- Install a VPN with UK servers for banking apps and UK television
Work through this list in the weeks before you move, and you will keep UK number abroad access, home banking and UK television from day one.
Our Verdict
To keep UK number abroad without roaming bills, keep your UK SIM for calls and texts and add a travel eSIM for data. Saily is the best value for holidays and short trips, and Holafly suits long stays with unlimited data. Add a VPN with UK servers, and you have everything a British traveller or expat needs in one phone.
How do I keep UK number abroad?
Keep your UK SIM in your phone for calls and texts, and add a travel eSIM for mobile data. Turn off data roaming on the UK line so it receives bank codes without running up roaming charges.
Will I still receive bank security codes abroad?
Yes. With data roaming off, your UK SIM still receives text messages, including one-time bank codes. On most UK networks, receiving texts abroad is free, but check with your provider.
Will my UK number be cancelled if I live abroad?
Many pay-as-you-go numbers are deactivated after several months without chargeable use. A small top-up or chargeable text every few months, or a cheap SIM-only plan, keeps the number active.
Does WhatsApp keep working with my UK number abroad?
Yes. WhatsApp works on any data connection, including a travel eSIM, as long as you keep your UK number. Keep the number active, because WhatsApp sends a verification code to it when you change phones.
Is a travel eSIM cheaper than UK roaming?
Usually yes. Travel eSIMs charge local rates for a plan sized to your trip, while UK roaming passes charge daily and can add up quickly on longer stays.
Do I need a VPN as well?
If you want UK banking apps and BBC iPlayer to work smoothly, yes. Your UK number receives codes, while a VPN with UK servers gives you a UK internet connection.
Related Guides
- Best eSIM for Expats
- UK Roaming Charges Compared
- Best VPN for UK Expats
- Best eSIM for Thailand
- Best eSIM for Europe
- eSIM for Dubai
- Monzo Not Working Abroad
- VPN for Online Banking While Traveling
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