Advice to travelers from Europe (ETA Authorisation)
Maybe some of you already know but i didnt know until 30 minutes ago.
It will be mandatory to apply this authorisation to visit UK if you are from one of those countries. (Moreorless all Shengen)
Check: https://www.gov.uk/guidance/check-when-you-can-get-an-electronic-travel-authorisation-eta
It will be online to apply from 5 March. Mandatory to visit UK from 2 April.