An Update
I have, today, passed my JAR Class 2 medical having received permission so to do from the CAA Medics last week. (Delay due to my aviation Doc being on holiday!). I have the restriction of dual flight controls and qualified pilot on board - but it is a start and 99% of my flying has been dual as a Chief Pilot.
I am having a review in June of 2010 and, subject to no indication of recurrence, I should have that restriction lifted. However, my plans to obtain a CPL in order to become a civvy flight instructor are twarted - it seems that a Class 1 is not possible (I might see if it could be obtained 'with restrictions'), although the process of obtaining a 'buy' on aspects of the ground exams - I'm an ex-RAF pilot - are no longer available I believe?
So it is good news for me although the postal strike will add delay to the process of obtaining my JAR PPL. Then I have to apply for my Jet Exemptions/Training Exemptions.