eSIM for the UK: London for tourists and students
People fly from Kazakhstan to London for two very different reasons: a week of sightseeing or a year or two of study. Either way you need mobile data from your first minute at the airport, to call a taxi, pull up a train ticket and message your family. But Britain has a few quirks that travellers usually discover only on arrival: it is not in the EU, a lot of travel happens underground, and a student will sooner or later need a local number as well as data. Here is how to set up your connection without surprises.
Britain outside the EU: make sure your plan lists the UK
Since leaving the European Union, the UK is no longer covered by the EU-wide roaming rules. For a traveller that means one simple thing: a plan bought for Europe does not automatically work in London. Some regional plans include Britain, others do not.
So before you buy, open the plan page and look for United Kingdom in the list of countries. If you are only visiting Britain, a single-country plan is the simplest option. If you continue from London to Paris or Amsterdam, choose a regional plan that explicitly lists the UK, so you don't have to switch eSIMs mid-trip.
Northern Ireland, including Belfast and the Giant's Causeway coast, is part of the UK, while the neighbouring Republic of Ireland is in the EU. If your route covers both, check that both countries are on the plan.
Your first weeks as a student in London: what an eSIM covers and what it doesn't
First-year students usually arrive a few days before term, and those days are the busiest: moving into halls, enrolling at the university, finding the nearest supermarket and opening a bank account. Almost all of it happens in apps, so reliable mobile data matters even more than it does for a tourist.
Funsim plans are data-only, with no calls or SMS. For most tasks that is enough: calls and chats go through messengers, and your Kazakh SIM can stay in the phone for text messages from your bank at home. Some British services, however, ask for a local number at sign-up. A sensible setup for students: use the eSIM for the first weeks while you settle in, then get a local number later, once you have had time to compare offers.
- Uber or Bolt from Heathrow or Gatwick to your halls
- Citymapper or Google Maps for bus and Tube routes
- the university app and email for course enrolment
- video calls home during the first, most unfamiliar evenings
- tethering your laptop until Wi-Fi is set up in your room
The London Underground: where you get signal and where offline maps help
The Tube is one of the oldest metro systems in the world, and mobile signal arrived in its tunnels much later than above ground. Coverage in tunnels is being switched on across more and more lines, and many stations have Wi-Fi, but you still shouldn't count on uninterrupted data for an entire journey.
The practical approach is to plan your route before heading underground and to keep an offline map of central London. Paying with a contactless card or your phone at the ticket barriers works over NFC and does not need mobile data, so you don't need signal at the gates.
If you ride the same line to university every day, download podcasts or lectures in advance, so your commute doesn't depend on whether there is signal in the tunnel.
A tourist's week versus a student's term: two different data budgets
A tourist spending a week in museums, using maps and messengers and posting the occasional photo usually gets by on a few gigabytes. If you plan lots of stories or videos from a concert or a football match, allow more.
A student's picture is different: study platforms, recorded lectures, calls with classmates and family, tethering a laptop. Tens of gigabytes can go in a month, so it makes sense to look at larger packages or unlimited data if it is offered for the UK, keeping in mind the fair-use speed cap. If you run out early, you can buy an extra package without replacing the eSIM.
Beyond London: Oxford, Bath, the Lake District and Scotland
On trains to Oxford, Cambridge or Bath you will mostly have data, but signal drops in cuttings and tunnels along the way, which is normal on British railways. In national parks such as the Lake District or Snowdonia in Wales, coverage weakens in valleys and on mountain paths, so download your hiking route for offline use.
Scotland is a big topic of its own: Edinburgh is well connected, while coverage in the Highlands and on the islands is noticeably sparser. We have a separate article about it, so here is just one point: for a trip north, keep some data in reserve for offline maps and check the weather forecast while you are still in town.