Thanks for the responses guys. I called bristol yesterday to order the mod 2 course material and off the top of their head they did not seem to think it would be a problem. They also gave me a number to call at the CAA for licensing issues which i will have a go at tomorrow.
I will hopefully sit mod 2 exams at the start of June giving me a spare 5 months or so for any resits. Shunter, i was thinking the same thing as i was pondering a possible exit strategy if i was to break the 18 month period! Its certainly a grey area, although i am sure there have been people who have tried it previously (anyone out there?
). Fingers crossed it wont affect me though.