Best UK eSIM Deals for Summer 2025 from Three and EE

Touching down in the UK soon?

Two of the UK's biggest networks have some seriously good summer eSIM deals happening right now! 🔥

When it comes to local plans versus roaming plans, local providers EE and Three UK destroy international eSIM providers on price and coverage.

But with these summer deals?

You’re getting hundreds of gigabytes at a better price than most “unlimited” or “extensive” data plans!

Whether you're travelling to the UK as a tourist, student, or settling in for a longer stay, these prepaid eSIM only deals deliver fast, reliable coverage, and an easy 3-minute setup—all without needing a UK address or long-term contract.

Only available at Sim Local.

_{Biggest Networks. Best Deals.}

If you don't have time to read this entire article, here's a quick summary of the deals:

1. Three 200GB Plan (Was 60GB)

Get a massive 200GB of UK data for just $25.25 (+233% FREE)

2. Three 100GB Plan (Was 30GB)

Grab 100GB of UK data for just $19.00 (+233% FREE)

3. EE 80GB Plan (Was 30GB)

Buy 30GB and get 80GB of blazing-fast EE data for just $19.00 (+167% FREE)

4. EE 150GB Plan (Was 100GB)

Go big or go home with 150GB of high-speed data — just $25.25 (+50% FREE)

With international providers, you're often paying over the odds for spotty coverage and short-lived plans. But savvy travellers know the difference between overpriced roaming and proper local plans.

With EE and Three UK, you're tapping into two of the UK's most trusted networks—the same ones locals rely on. That means faster connections, better support, and more value for money.

• Strong coverage, fastest speeds: Both providers are among the Big 4 providers in the UK. Three offers 99% 4G coverage, while EE is known as "The UK's fastest network".
• 30-day durations: All plans come with plenty of data, and plenty of time to use it all.
• Unbeatable prices: The table below speaks for itself, really.

• 3-minute setup: Easy activation, no ID checks, and no contracts.
• Calls & texts: All plans come with a real UK phone number. That's rare. Most eSIM providers are data only.
• Roaming included: Three UK offers EU and global roaming across 70+ destinations!
• Live help & easy refunds: Purchase any of these plans through Sim Local and get the support you need, exactly when you need it.

EE - Summer eSIM Deals

EE's summer offer is all about rewards with 50%-150% more data for free! These plans come with EE’s industry-leading coverage and lightning-fast speeds—perfect if you’re planning to travel beyond big cities like London, Manchester, and Liverpool.

_{1. EE 30GB Plan + 50GB Bonus}

United Kingdom eSIM – 80GB for 30 Days

EE UK

80GB

$19.00

30 Days

Unlimited Local Mins

Unlimited SMS Texts

Unlimited Local SMS

Buy Now

Summer Promo

• $19.00
• 30-day validity
• 30GB 80GB UK data
• Unlimited UK calls & texts
• No hotspot restrictions

Working out at about £0.19 per GB, this deal is perfect for anyone who wants high performance on one of the biggest UK networks without the premium price tag. Most plans don't come with 150% extra data, unlimited UK calls and texts, 3-minute setup, live chat support, and a full refund if you change your mind, but this one does. Kind of a no-brainer, isn't it?

_{2. EE 100GB Plan + 50GB Bonus}

United Kingdom eSIM – 150GB for 30 Days

EE UK

150GB

$25.25

30 Days

Unlimited Local Mins

60 Intl Mins

Unlimited SMS Texts

Unlimited Local SMS

Buy Now

Summer Promo

• $25.25
• 30-day validity
• 100GB 150GB UK data
• 60 mins of international calls included
• Unlimited UK calls & texts
• No hotspot restrictions

You know what? £0.13 per GB on the UK's most awarded network is just too good not to shout about! This plan offers an extra 50GB on top of an already massive data balance. It also includes unlimited UK calls and texts, plus 60 minutes of international calling—perfect if you’re keeping in touch with people back home. Boasting ultra-fast 4G speeds, it’s built for anyone who streams, works remotely, or just never puts their phone down. And like all our plans, setup takes just 3 minutes, live help is available on WhatsApp, and refunds are no hassle if you change your mind.

Three UK - Summer eSIM Deals

Three UK is bringing unbeatable value to summer travels with TRULY MASSIVE data. Get double and triple the data for free, plus UK calls and texts, roaming data, and no hotspot restrictions or hidden limits, all for bargain prices!

_{3. Three UK 60GB → 200GB}

United Kingdom eSIM – 200GB for 30 Days

Three UK (DI)

200GB

$25.25

30 Days

Unlimited Local Mins

Unlimited SMS Texts

18GB Roaming Data, Unlimited Local SMS

Buy Now

Summer Promo

• $25.25
• 60GB 200GB UK data (+ 18GB roaming)
• Unlimited UK calls & texts
• No hotspot restrictions
• 30-day validity

200GB for £20 beats most so-called “unlimited” plans—especially once fair usage caps kick in. At just £0.10 per GB, this eSIM delivers unbeatable value without the usual limits. This is the ideal plan for heavy users, digital nomads, or hotspot sharers who hate the thought of running out of data. Plus, it comes with 18GB of roaming data, UK calls and texts, 3-minute setup, and live customer support if you need it.

_{4. Three UK 30GB → 100GB}

United Kingdom eSIM – 100GB for 30 Days

Three UK (DI)

100GB

$19.00

30 Days

Unlimited Local Mins

Unlimited SMS Texts

12GB Roaming Data, Unlimited Local SMS

Buy Now

Summer Promo

• $19.00
• 30-day validity
• 30GB 100GB UK data (+ 12GB of roaming data)
• Unlimited UK calls & texts
• No hotspot restrictions

This 30GB plan is blowing up to 100GB of data this summer (with 12GB of roaming data) for just $19.00—that's £0.15 per GB or £0.50 a day! With unlimited UK calls and texts, this plan is built for social scrollers, video streamers, and anyone glued to their phone. You also get fast eSIM setup, live chat support, and no-quibble refunds for total peace of mind.

More eSIM Questions, Answered

What happens when you buy a prepaid eSIM from Sim Local?
Once you’ve picked your prepaid eSIM plan from Sim Local, you can download and activate it with a single click right after purchase. You’ll also get a QR code or activation link sent straight to your inbox. It takes about three minutes to activate. No roaming charges, no SIM swapping, no stress.

Is my phone compatible with eSIM?
Most modern smartphones (iPhone XS or newer, Google Pixel, Samsung Galaxy S20+, etc.) support eSIM. Just check your settings or this compatibility checker.

How long does it take to install?
Installing a Sim Local eSIM is so easy. You can keep your physical SIM card where it is, or remove it if you want. Simply scan a QR code or click a button to download, changes a few phone settings and you're connected in 3 minutes!

How much data do I need?

• Light: 5–20GB (browsing, maps)
• Medium: 30–100GB (socials, YouTube)
• Heavy: 100–200GB+ (hotspot, gaming, remote work)

When do these promos end?

• Three: October 1, 2025
• EE: October 1, 2025

Ready to stay connected and save big?
Choose your UK plan, scan your code, and enjoy stress-free data while you explore the UK!