I passed AGK and FPP last and on the same day, 31st October 2010 - hence 31st October 2012 being the end of my 24 months. If all goes to plan and I can find a combination of instructor availability, examiner availability and half decent weather, I should get through in the next 6 weeks before that date!
My main concern and original question was: is that 24 months to just pass my skills test, or 24 months to actually have my licensed issued? If its the latter then my deadline for skills test is probably somewhere in the early 20's of October at the latest, to allow time for all my paperwork to be processed and license issued before 31st October.
All the exams are sat through the training school so its not difficult to retake, I can go down there and take any of them again should I need to.