@ sigh: Glad it helped mate, yeah sounds like u got a good understanding now.
@ AlexanderB: Hey mate, I think it is a misunderstanding on my part and in fact its just my Spec testing, but I will ring them to double check. Just that they talked of it all at once with the career interview so I assumed it was all happening on the same day ( but my letter does just say "...next step in the DFR selection process is to attend specialist testing on...).
Yeah I will "get my read on" and go back through it all cheers.
Best of luck to everyone else in their various stages of the process.
JoRocketoz
p.s. Gotta love the Pprune