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Travelmaxxing

Buyer’s guide · checked 4 Nov 2026

The Best eSIM for the UK, Picked for Your Trip

Short answer: for most UK trips, NUM’s pick is 5 GB, valid 30 days for $4.39 on EE, 3. Shop prices on 4 Nov 2026. We sell these eSIMs, so every other brand’s price below links to its source.

Traveler using a UK eSIM on Westminster Bridge, London
UK eSIM: online on Westminster Bridge, London

The best eSIM for the UK, trip by trip

Best for most trips

$4.39

5 GB, valid 30 days · about $0.88 a GB
Networks: EE, 3
Two weeks of maps, rides, social and photos.

Get this plan

Best for a short trip

$2.99

3 GB, valid 15 days · about $1.00 a GB
Networks: EE, 3
A week or a long weekend.

Get this plan

Best for a month

$6.29

10 GB, valid 31 days · about $0.63 a GB
Regional plan, 31 countries
Networks: 3
Long stays, remote work and hotspot.

Get this plan

Best value per GB

$19.89

50 GB, valid 30 days · about $0.40 a GB
Networks: EE, 3
The most data for the money in this list.

Get this plan

NUM’s shop on 4 Nov 2026, in US dollars. The price on the pay button is the price you pay.

Every UK plan by price per GB

UK eSIM price per GBPrice per GB for each UK plan: 1 GB for 7 days, $1.09, about $1.09 a GB; 2 GB for 15 days, $1.99, about $1.00 a GB; 3 GB for 15 days, $2.99, about $1.00 a GB; 3 GB for 30 days, $3.19, about $1.06 a GB; 5 GB for 30 days, $4.39, about $0.88 a GB; 10 GB for 30 days, $6.39, about $0.64 a GB; 20 GB for 30 days, $10.49, about $0.52 a GB; 50 GB for 30 days, $19.89, about $0.40 a GB.1 GB · 7 days$1.09/GB2 GB · 15 days$1.00/GB3 GB · 15 days$1.00/GB3 GB · 30 days$1.06/GB5 GB · 30 days$0.88/GB10 GB · 30 days$0.64/GB20 GB · 30 days$0.52/GB50 GB · 30 days$0.40/GB
Shorter bar, less money per GB. The highlighted plan costs the least per GB in this list.

eSIM, roaming or a local SIM in the UK?

OptionTwo weeksSetupPhone number
NUM eSIM$4.39
5 GB		Install at home on wifi, online when you landData only; your home number stays on
Verizon TravelPass$168.00Nothing to installYour own number
AT&T International Day Pass$120.00Nothing to installYour own number
Local SIM cardSet by local shopsBought after you land; many countries register SIMs to your passportA local number

Roaming per line for 14 days, as each carrier publishes it: Verizon (checked 5 Nov 2026), AT&T (checked 5 Nov 2026). NUM: the shop’s price on 4 Nov 2026.

How we picked

Networks in the UK

Coverage in the UK: what to know

Opensignal's January 2026 report: EE led download and upload speeds and 5G coverage, while Three won time connected and 5G speeds. O2 won overall coverage experience. Both networks on our plans do well, EE generally ahead.

Checked 3 Nov 2026. Source: insights.opensignal.com. Coverage changes, so check your route before you rely on it.

Best eSIM for the UK: questions

What is the best eSIM for the UK?

For most trips, NUM’s 5 GB, valid 30 days plan at $4.39 (shop price on 4 Nov 2026), on EE, 3. The best one is the plan that covers your days and data on a strong local network. NUM sells eSIMs, so other brands’ prices on this page are linked to their sources.

What is the best eSIM for a week in the UK?

3 GB, valid 15 days for $2.99 on 4 Nov 2026: enough for maps, rides, messages and photos.

What is the best eSIM for 2 weeks in the UK?

5 GB, valid 30 days for $4.39 on 4 Nov 2026, room for social, photos and a few video calls.

Is there an unlimited eSIM for the UK?

Not on 4 Nov 2026. Plans for the UK have a set amount of data, and you can add more to the same eSIM if you run low.

Which network is best in the UK?

Opensignal's January 2026 report: EE led download and upload speeds and 5G coverage, while Three won time connected and 5G speeds. O2 won overall coverage experience. Both networks on our plans do well, EE generally ahead.

Is an eSIM better than roaming in the UK?

For data, usually. Two weeks on Verizon TravelPass is $168.00 a line (Verizon, checked 5 Nov 2026); NUM’s two-week pick was $4.39 on 4 Nov 2026. Keep your home line for calls.

Will it work on my phone?

Dial *#06# on the phone you’re taking. If you see an EID number, it takes an eSIM. Every iPhone from the XR and XS on does, and the SE from 2020, as do Google Pixel 3 and later and Samsung Galaxy S20 and later. The phone must be carrier-unlocked. Not sure? Text PHONE and your model and we’ll check.

Does it come with a phone number?

No. It’s a data-only eSIM. WhatsApp, LINE, iMessage and FaceTime all work over it, and your home number can stay on for calls and codes.

More for your UK trip