Effective January 8, 2025, US, Canadian, and many non-European passport holders must obtain an Electronic Travel Authorization (ETA) to enter or transit through the UK if they do not possess a valid UK visa. If you previously travelled with only your passport for routine trips, you will no longer be able to without an ETA. Beginning April 2, 2025, the ETA requirement expands to most European countries. Some countries, notably China and India, are not eligible for an ETA and will continue to require a visa. Refer to the OSP Blog for more information.