Go on then, here's a slightly odder one about revalidations....
The rules state that, of that 12 hours in the second 12 month period, at least one flight of at least one hour must be with an instructor.
Now, I did my US PPL Biennial Flight Review in July, and did a couple of flights with an FAA instructor, one of 1 hr, one of 1.5 hrs, which he recorded and signed up, complete with exercises carried out duly noted.
Does that count for revalidation of my UK PPL, bearing in mind that my "second 12 month period" started in June ?