Thanks for the replies.
I'm completing the exams in extremely short order, so advice on the most effective way to study for the exams is appreciated. I have, of course, booked the crammer courses through Bristol and I'm banging through the question banks just now with a view to concentrating my revision on my weakest areas.
For those of you who find this through the search function, don't forget to send off form SRG 2133 to the CAA to apply for military accreditation...it means you don't actually have to do any official groundschool.
I'm quite surprised I've been allowed to fly an EASA aircraft through civilian airspace to civilian airports for years without doing any of this...hey ho, British officer coming through, what!