What is the UK ETA?
The UK Electronic Travel Authorisation (ETA) is a pre-travel permission required by the United Kingdom for visitors from eligible countries who do not need a visa. It is linked electronically to your passport and must be obtained before you travel.
The UK ETA does not guarantee entry — Border Force officers retain the right to refuse admission on arrival — but it is a mandatory requirement to board a flight or vessel to the UK.
It is valid for multiple trips over two years or until your passport expires, whichever comes first.