Affordable eSIM UK Data Plans – Best Value Deals in 2025

Looking for the cheapest eSIM data plans in the UK that don’t burn a hole in your pocket? Whether you’re a student, tourist, remote worker, or just someone who doesn’t want to deal with physical SIM cards anymore, eSIMs make your life way easier.

You don’t have to visit a shop. You don’t have to wait for delivery. Just pick a plan, scan a QR code, and boom, you’re connected. But here’s the thing: not all eSIMs are cheap. That’s why we’ve rounded up the best-value options right here. If you're ready to Buy the Best UK eSIM card in 2025, start here.

Know the Best Plans for 2025

We’ve looked at the top providers, Three, EE, O2, and Vodafone. You can easily pick out the most affordable deals that give you solid data, fast speeds, and easy activation.

Three eSIM – Ultra Value for Big Data Users

• Price: £24/month

• Data: Massive 500GB

• Calls: Unlimited UK calls

• Extras: Hotspot support, 5G speeds, UK-only roaming

This is perfect if you stream videos, work remotely, or travel around the UK. It’s not the cheapest upfront, but the value per GB is unbeatable.

EE eSIM – Balanced & Reliable

• Price: £24/month

• Data: 100GB

• Calls: Unlimited UK calls

• Extras: 5G speeds, UK-only roaming, hotspot support

If you want a cheaper plan with still plenty of data and excellent coverage, EE hits the sweet spot. Their 5G network is solid across most UK cities.

O2 eSIM – Best for UK + International Calls

• Price: £18/month

• Data: 50GB UK + 35GB EU

• Calls: Unlimited UK + 500 mins to 47 countries

• Extras: WiFi calling, 5G, hotspot included

This plan is a great option if you travel in and out of the UK or need to call family/friends abroad. You get a bit less data, but lots of flexibility.

Vodafone eSIM – Simple and Strong

• Price: £22/month

• Data: Not listed in the screenshot, but typically mid-range (confirm before use)

• Calls: Unlimited UK (assumed standard)

• Extras: Ultra-Fast Data, strong 5G performance

So, Which One Should You Buy?

If you’re purely after affordable eSIM UK Data Plans, O2 and EE are priced best. But if you want serious data without limits, Three’s 500GB plan is probably the best deal in the UK right now. Especially for heavy users or people who have a lot of hotspots.

To buy the best UK eSIM card, think about your usage:

• Going to Europe? O2 gives you extra EU data.

• Staying only in the UK with heavy streaming? Three is your guy.

• Need something steady and affordable? EE fits the bill.

eSIMCards is the Best for You

These eSIMs are all digital. No delays, no delivery. You can easily choose your plan online, scan the QR code, and your eSIM is ready to go. You won’t believe that, but it is very fast, secure, and way easier than the old-school way. In 2025, eSIMs are not just the future; they’re the smart choice.

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