New entry requirements for the UK for EU citizens from 1 April 2025

From 1 April 2025, EU citizens need an ETA (& passport) to enter into the UK. Applications starting on 5 March 2025.

You can apply for the ETA here:

https://www.gov.uk/guidance/apply-for-an-electronic-travel-authorisation-eta 

At the moment, the website is already busy so you might have to try again later
(Status: 5 March 2025)