Everything you need to know about the UK’s new Electronic Travel Authorisation (ETA)

Many people travelling to the UK already need to apply for the Electronic Travel Authorisation (ETA) – but the scheme is being extended.
An ETA is a digital permission to travel to the UK. It is not a visa and does not permit entry into the UK – it authorises a person to travel.
Upon being approved, it is attached digitally to the traveller’s passport.
All travellers who do not require a visa to enter the UK for a short stay, or who don’t already have a UK immigration status, are required to have one.