My turn to talk rubbish and get shot down in flames.......
If you go to a UK based JAA approved flight school and do instrument training, and after about 15 hours flying it just so happens that you have fullfilled all the requirements for the CAA IMC rating course, so you do the skills test and add the IMC rating to your license. Then you take a break for about a year while you do something else, like a distance learing course for the ATPL exams followed by CPL course, and then decide to continue the IR course, surely the 15 hours instrument training you did in the first place will still count as hours towards the JAA IR?
Fire away....
D