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Best eSIM UK: top picks for every type of traveller

3 August 2026

In this post...

Planning a trip to the UK brings up two questions pretty fast: how much data do you actually need, and which provider is worth your money? This guide answers both; real plans from EE, Three UK and Lycamobile (the UK's actual mobile networks), plus Sim Local's own data-only option, broken down by what you're actually doing here: a short visit, a business trip, a longer stay, or a UK trip that continues on into Europe.

How much data do I need as a tourist in the UK?

The most common question people ask themselves before buying an eSIM plan: how much data do I need?

Unfortunately, we have to give the cop-out answer: it depends on your usage and how long you plan to stay.

When you're travelling you use your phone more than you realise to find your way on maps, buy tickets and managing bookings, stay in touch with friends back home, the list goes on!

The good news?

eSIM plans tend to offer better value the more data you buy — meaning the price per gigabyte usually drops with bigger packages.

So if you’re unsure how much you’ll need with your eSIM plan for the UK , it’s often smarter (and cheaper in the long run) to go big and stay connected worry-free.

In this guide, we’ll walk you through some of the best UK eSIM plans from different providers, ensuring you stay connected effortlessly—no matter how long you’re in the UK.

What is an eSIM, and why get one for the UK

An eSIM is a digital SIM built into your phone; no physical card to swap, no queueing at an airport kiosk. You install it by scanning a QR code, and it sits alongside your existing SIM rather than replacing it, so your home number stays active for calls and texts while the eSIM handles UK data (and, on some plans, a UK number too).

It's also a small but genuine environmental upside over a physical SIM: no plastic card, no packaging, no shipping; the whole thing is downloaded.

Compatibility is straightforward on most modern phones: iPhone XS and newer, and recent Android flagships like the Samsung Galaxy S21+ and Google Pixel 3+. Check under your phone's cellular or network settings, or use Sim Local's compatibility checker, before you buy.

How much data do I need as a tourist in the UK?

It depends on your usage. If you're mainly using maps, messaging apps and email, 5-10GB should comfortably last a week. Heavier users; streaming music or video, or using their phone as a hotspot; might need 10-30GB or more.

It's worth checking your phone's data usage history before you travel, since usage abroad (constant maps, more messaging, less Wi-Fi reliance) is often higher than at home. If you're not sure, Sim Local's Find My Plan tool gives a personalised recommendation based on your trip.

Best eSIM providers in the United Kingdon, compared

Sim Local sells eSIMs on EE, Three UK and Lycamobile; the UK's real mobile networks; alongside its own multi-network data-only plan. Some of these work out ridiculously good value compared to what you'd pay with online-only providers like Airalo, Holafly or Saily, because you're paying local UK pricing rather than an international traveller markup.

EE UK’s eSIM

Watch Monito as he puts our EE eSIM to the test 📶

Summer Promo

Summer Promo

Top Seller

Summer Promo

Summer Promo

Top Seller

Calls & Texts: Unlimited local minutes, unlimited SMS, 60 international minutes
Data: 🔥from 80GB to unlimited
Price: £20.00
Valid For: 30 days
Multi Destination: UK only
Hotspot & Data Tethering: ✅

EE covers the widest area of any UK network, including the strongest rural and Underground-adjacent coverage, which makes it the safest default if you want to be online everywhere from central London to the countryside. The 150GB and 80GB plans currently include a 50GB summer promo bonus at no extra cost, and the Unlimited plan is Sim Local's top seller for UK eSIMs; all three include unlimited local calls and SMS plus a block of international minutes.

☝️ Yellow Productions reviewed EE and Lycamobile eSIMs from Sim Local. Check it out!☝️

Three UK eSIM

Calls & Texts: Unlimited local minutes, unlimited SMS
Data: From 20 GB to Unlimited in the UK (30 GB for roaming)
Valid For: 30 Days
Multi Destination: Yes
Hotspot & Data Tethering: ✅

Three positions itself as the UK's fastest 5G network, and every Three UK plan on Sim Local includes EU roaming data on top of the UK allowance; useful if your trip isn't stopping at the Channel. The summer promo is doubling data across all four Three plans (10GB, 30GB, 60GB and unlimited) at no extra cost, from a £10-equivalent starter plan up to unlimited.

Lycamobile UK’s eSIM

Calls & Texts: Unlimited local minutes, unlimited SMS, 100 international minutes
Data: From 20 GB to unlimited data in the UK
Valid For: 15 Days
Multi Destination: Yes (includes EU data roaming)
Hotspot & Data Tethering: ✅

Lycamobile's two plans (Unlimited and 100GB) both bundle in EU roaming data; 35GB and 12GB respectively; alongside unlimited UK calls and SMS and international minutes. Lycamobile also markets itself on scale, with 16 million customers globally, which is worth knowing if network reliability and customer base matter to your decision.

Sim Local eSIM; a simple data-only option

Sim Local's own 20GB, 30-day plan is the simplest choice if you don't need a UK number: it's data-only, runs across EE, Vodafone and Three UK infrastructure rather than being tied to one network, and calls are handled over data via WhatsApp, FaceTime or Skype. Setup takes about three minutes.

Best eSIM plans for different needs

Best eSIM for UK tourists

For a typical week-long visit, EE's 80GB plan ($20.00) or Three UK's 30GB→100GB summer promo plan (also $20.00) both comfortably cover maps, social media and messaging with plenty of room to spare. If you don't need a UK number and just want the simplest option, Sim Local's 20GB data-only plan covers the same ground for less.

Best eSIM for business use in the UK

For business travel, a UK number and reliable calls matter more than they do for a typical holiday. EE's Unlimited plan ($53.50) is the strongest choice here; Sim Local's top seller, on the UK's widest-coverage network, with 180 international minutes included for calls back to your home office. Three UK's Unlimited plan is a solid alternative if you're based mainly in cities and want EU roaming included for a multi-country work trip.

Best eSIM for a longer stay in the UK

For stays of a month or more, the higher-data 30-day plans work out better value than repeatedly buying short ones. Three UK's 60GB→200GB summer promo plan ($26.75) or EE's 150GB plan ($26.75) both give a large enough allowance to renew monthly without thinking too hard about usage.

Best eSIM for UK and Europe travel

If your trip continues into Europe, Three UK and Lycamobile are the two options built for it; both include EU roaming data on the same eSIM, so there's no need to switch SIMs or risk roaming charges crossing the Channel. For a deeper look at country-specific European options once you're there, see our guide to the best eSIMs for Europe.

How to choose the right eSIM for you

Three things actually decide which plan is right: coverage (EE for the widest reach, Three for fastest 5G in cities, Lycamobile or Three if you need EU roaming), your realistic data usage (see the data guide above), and support; Sim Local's support team is available on live chat and WhatsApp, with real humans, if anything goes wrong with activation.

If you want the same coverage and UK number that locals get, go for an eSIM from a local carrier; EE, Three UK or Lycamobile. If you just need data and want the simplest possible setup, Sim Local's own plan does that without the extras you won't use.

What happens when you buy a UK eSIM plan

You'll get download instructions instantly by email, and setup takes about three minutes; no need to remove your existing SIM. Because it's a second, digital SIM alongside your physical one, you can install it any time before you fly and simply wait to activate it until you land, or just before.

Step-by-step: setting up your UK eSIM

Check that your phone supports eSIM and is unlocked (not tied to a single home carrier).
Buy your UK plan on simlocal.com; you'll get a QR code by email within minutes.
Install the eSIM at home, on Wi-Fi; scan the code under Settings > Cellular > Add eSIM (iPhone), or the equivalent menu on Android.
Set the new eSIM as your data line (and calls/SMS line, if your plan includes them), keeping your home SIM active for your usual number.
Activate once you land, or just before; there's no need to activate the moment you install it.

If installation doesn't work first time, the most common causes are a weak Wi-Fi connection during setup, a phone still locked to its home carrier, or an expired QR code; reinstalling on stronger Wi-Fi solves most of these, and support can reissue a QR code if needed.

Best eSIM for UK; FAQs

How much data do I need for a trip to the UK?

It depends on your usage. If you're mainly using maps, messaging apps, and email, 5-10GB should last a week. Heavier users streaming music, videos, or using their phone as a hotspot might need 10-30GB or more.

Are these the same networks locals use?

Yes. If you want to pay the local price and experience the same strong coverage as locals, including a UK number for calls and texts, go for an eSIM from a local carrier like EE, Lycamobile or Three UK.

Can I use my eSIM only in the UK, or does it work in Europe too?

Some eSIMs are UK-only, while others offer coverage across Europe too. If your trip covers both, a UK + EU plan like Three UK or Lycamobile avoids switching SIMs or racking up roaming charges.

Which is the best UK eSIM provider for business use?

EE's Unlimited plan is the strongest fit for business travel: the widest coverage of any UK network, a UK number, and 180 international minutes included for calls home. Three UK's Unlimited plan is a good alternative if EU roaming on the same trip matters more than coverage breadth.

What are the best eSIM plans available in the UK?

There's no single "best" plan; it depends on the trip. EE's Unlimited is the top seller overall. Three UK's plans are the strongest pick if you need EU roaming included. Lycamobile suits similar EU-roaming needs with a shorter 15-day cycle. Sim Local's own 20GB plan is the simplest, cheapest option if you just need data.

Browse Sim Local's UK eSIM plans: simlocal.com/plan-selection/united-kingdom