Who needs an ETA?
Most travellers to the UK now require either an ETA or a visa. You will need to get an ETA if you are a citizen of an EU nation (excluding Ireland), the USA, Australia, Canada, or select other countries. This applies even if you were previously able to travel without a Visa, and do not hold a UK visa, Biometric Residence Permit (BRP) or Biometric Residence Card (BRC).