Thanks for that CB. I actually found that once I'd managed to get my dial up connection to work - it's kak!
It seems that the SA CAA don't insist on a South African medical but the school inisists they do, so if it comes down to it I'll pop down to Horley and find out how unhealthy I am.
The main issue is not wanting to "waste a week" having to retake all the exams and get the paperwork done the next time I'm there when I could be doing some flying.