GCSEs

[aviator]

Prevents questions being revealed to those who are still to sit the exam. Though I would have thought you could have sat the exam earlier and then be isolated with no communication access until the time that the exam is sat in the UK.

You can sit exams later or earlier provided the exam board can verify you have had no contact with other candidates. It's all about ensuring that one thing and it doesn't matter if you're late or whatever. You should still get the full time, especially if you arrive within one hour of the exam starting.

Anyway, let's not worry about the bad sides to exams! I feel sorry for the students abroad, because I think 9.00 am is early enough and 1.30 pm is late enough xD