Just a final note on the subject for anyone who might find themselves in the same situation as me. Having read of previous experiences in the 'colour vision part 1' thread, I was a little concerned as to the reaction of the CAA to being sent some results from outside the UK etc etc.. turns out my worries were utterly unfounded; unrestricted license and medical turned around without issue!
That said, I won't be simply swanning off into the CP3 sunset. The system stinks, has cost me a lot of time, money and effort in 'beating' it, and things are well overdue for change.