Lads, you might want to have a look at a similar thred on
http://www.irishaviation.net/forums/...ML/000774.html
It would appear that if you intend doing your commercial training in the UK, then you must do your Medical under the supervision of the CAA. I am currently checking this with the CAA, and will let you know as soon as I hear anything.
It's a bit like a similar situation I had a few months back. I wanted to go over to the States to finish my PPL. However, as I had already done my PPL exams here in Ireland, I would have had to resit them all as most of the JAA approved flight schools in America are JAA approved by the CAA. Therefore I would be deemed to be training for a JAA licence under the supervision of another aviation authority!