I went and took the tests about 3 weeks ago. We were told prior to starting the tests that the last person to be de-briefed would be away no later then 16h00. Luckily I was the first one to be called for the debrief, and got away at just after 14h00.
Enjoy yourself at Cranwell, the tests and results are interesting, and the GAPAN people there really friendly and helpful.