Originally Posted by
KARFA
No, the rules are based on everywhere you have been in the preceding 10 days so that wouldn’t work. You would have to declare where you have been in the passenger locator form and you would be treated as an amber arrival in the UK. The only way to avoid this is to spend 10 days in a green country before arrival as you noted.
In terms of defining the 10 days before arrival - is that 10 x 24 hour periods, or 10 days starting from the midnight after you arrive?
So if I arrive in the UK tomorrow evening from an amber country, then leave the UK almost immediately to a green list country, am I out of the woods the following Sunday evening (ten days later) or Monday (10 full days passing in between with part days not counting)?