Starting on 2 April 2025, Estonians and other EU citizens will be required to obtain an Electronic Travel Authorisation (ETA) before entering the United Kingdom. An ETA gives you permission to travel to the UK for a period up to six months. The document itseld is valid for two years. The ETA application takes approximately three days to process and costs £10.
The British govenment has introduced the new ETA purportedly to unburden the Britsh taxpayer from funding the British border service "UK Visas and Immigration (UKVI)".
Travellers can apply for an ETA online or via the app. More information can be found here.