Please note, ETA eligible countries and requirements are not listed here. Guidance regarding ETA (Electronic Travel Authorisation) can be found here: www.gov.uk/electronictravelauthorisation
Carrier Support Hub lines are for use by carriers and operators only. “Check if a passenger needs a UK visa service” to determine if a passenger requires a visa, here: Check if you need a UK visa – GOV.UK (www.gov.uk)
