eSIMCards logo
UNLIMITED DATA
UK flag

eSIM UK Unlimited Data - Dailly, Weekly, Monthly, and 90 Days

Stay connected across the UK with unlimited data eSIM plans for 1 day to 90 days. Choose your UK eSIM plan and get connected with esimcards.

4.6/ 5

Rated 4.6/5 Excellent - Based on 10870+ Reviews

Esim UK Unlimited data (Build Your Own Pass)

Pick your network, then choose how many days you need — 1, 5, 10, 15, 30, or any length from 1 to 30 with the calendar.

EE

£2.50 / 1 day

Data
Unlimited
Calls
Data-only

Days

days

30-Day Unlimited UK eSIM Plans

One month of unlimited data — stay connected without watching a GB counter.

Monthly Rolling

Subscription
Vodafone

£22.00/mo

Data
Unlimited
Calls
Data-only

30 Days

Three

£23.50

Data
Unlimited
Calls
Data-only

30 Days

Vodafone

£24.50

Data
Unlimited
Calls
Data-only

Monthly Rolling

Subscription
EE

£24.99/mo

Data
Unlimited
Calls
Unlimited minutes

30 Days

Three

£25.00

Data
Unlimited
Calls
Unlimited minutes

30 Days

EE

£25.50

Data
Unlimited
Calls
Unlimited minutes

Monthly Rolling

Subscription
EE

£25.50/mo

Data
Unlimited
Calls
Unlimited minutes

Monthly Rolling

Subscription
Vodafone

£29.50/mo

Data
Unlimited
Calls
Unlimited minutes

30 Days

Vodafone

£29.50

Data
Unlimited
Calls
Unlimited minutes

30 Days

O2

£34.99

Data
Unlimited
Calls
Unlimited minutes

90-Day Unlimited UK eSIM Plans

Three months of unlimited data — no need to track daily usage.

3 Month

Best value
Vodafone

£65.00

Data
Unlimited
Calls
Data-only

3 Month

EE

£68.00

Data
Unlimited
Calls
Unlimited minutes

3 Month

Vodafone

£71.50

Data
Unlimited
Calls
Unlimited minutes

How Does a UK Unlimited Data eSIM Work?

An eSIM is a digital SIM that is built into your compatible smartphone, so you don't need to insert or physically replace a SIM card. With a UK eSIM unlimited data plan, you can connect to a local mobile network in the UK without removing your existing SIM. Here’s how an unlimited data eSIM for the UK works:

  1. 1

    Buy a UK eSIM Data Plan: Choose and purchase a UK unlimited data eSIM plan from an eSIM provider. Once your payment is complete, you’ll receive an eSIM activation QR code at your registered email address.

  2. 2

    Install the eSIM Profile: Before travelling to the UK, connect your phone to Wi-Fi and scan the QR code to install the eSIM profile. Follow your phone’s instructions to complete the installation.

  3. 3

    Activate Your UK eSIM: Installing the eSIM does not necessarily start your data plan immediately. Your plan typically begins when you arrive in the UK and the eSIM connects to a supported local mobile network. Although the plan is advertised as unlimited, the provider may apply a fair-use policy or reduce your connection speed after a certain amount of high-speed data has been used.

  4. 4

    Start Using Mobile Data: Once your UK eSIM connects to a local network, you can start using mobile data for browsing, navigation, messaging, social media, streaming and other online activities. You can also keep your home SIM active for calls, texts and receiving verification codes, provided your phone supports dual SIM functionality.

Receive Your eSIM Profile via Email or App

Once you purchase, you'll instantly receive simple instructions to install and activate your UK eSIM and enjoy affordable data while you travel.

What's Included:

QR Code Installation Guide

Step-by-step App Instructions

Instant Activation Support

Live Chat & Email Support

View installation instruction

Customer Reviews

Share your experience or read what others say about our plans

Write a review

Share your experience with others

0/2000

Why your review matters

  • Helps other travellers choose the right plan
  • Share your real experience with setup & coverage
  • Honest reviews only – no signup required

Tip: Mention data speed, ease of setup or where you used it – it really helps others!

Frequently asked questions about UK unlimited data eSIM

A UK unlimited data eSIM is a digital SIM plan that lets you access mobile data in the UK without using a physical SIM card. Depending on the plan, unlimited data may be subject to a fair-use policy or reduced speeds after a specified amount of high-speed data is used.

After purchasing your UK eSIM, you’ll receive an activation QR code by email. Connect your phone to Wi-Fi, scan the QR code, and follow the on-screen instructions to install the eSIM. Your data plan generally starts when the eSIM connects to a supported UK network.

Yes. If your phone supports dual SIM functionality, you can keep your regular SIM active for calls, texts and verification codes while using the UK eSIM for mobile data.

An unlimited data eSIM allows continued data usage, but the provider may apply a fair-use policy. After reaching a certain high-speed data allowance, your connection speed may be reduced. Check the specific plan terms before purchasing.

Yes, a UK eSIM can generally be used across England, Scotland, Wales and Northern Ireland where the supported mobile network has coverage. Network availability and speeds can vary depending on your location and the network used by the eSIM provider.

eSIMCards logo

Your trusted provider for global eSIM solutions.

FacebookX (Twitter)LinkedInYouTubeInstagram

Contact

Pentagram Systems Limited

27 Old Gloucester
St London WC1N 3AX, UK

Email: support@pentagramsystems.co.uk

Phone: +442045113780

© Pentagram Systems Limited 2026