Posted: Mon Jul 12, 2021 11:42am
As I understand it: if you have been double-vaccinated in Spain, with or without a certificate it makes no difference to visiting the UK. Only those having had double NHS jabs, with confirmation count.
You have to have a fit-to-fly test before the airline will let you board (within 72 hours of boarding), and pre-booked day 2 & day 8 tests in the UK, during which time you must isolate (and will be contacted to check you are there, or as they use mobiles, that you are somewhere!).
Have I got this right? As at 11.41 Monday 12th July, as the rules change all the time!