Hi,
I was awarded a flying bursary from the Air League during 2008, which I used on an IMC. I didn't have to attend any formal interviews, all that had to be done was fill in an application form and answer some questions.
I'm glad I got through and passed, good for the CV.
Concerning the GAPAN Aptitude tests, I did those separately in the past, applying through GAPAN directly. The tests were done during 1 day and are not too difficult, I managed to get a high average result. They are useful for those who are yet to do a PPL, as they test your ability to do lots of motor skills all at once and hand/eye co-ordination. I seem to recall staying at Cranwell in a B&B before the tests the following day, rather than getting up early then arriving tired.
Hope this helps.