Under EASA, it has nothing to do with the UK CAA who does your medical if your licence is administered by another competent authority.
True. But as I'm working with a foreign (EASA) licence for a UK based company with a UK CAA issued AOC, I (and my employer) have to play by their rules. It is a bit weird as I would've thought it would be better for UK CAA to have some sort of record of me in their files. Last spring when we found this out I called to my licencing authority and they were quite surprised too...
But actually I don't mind. I get to visit home once a year on company expense and I can add some holiday to that trip.
170': If you'll get any decent answer from CAA and a reason behind this policy I'd be interested to hear it.