hey thanks for the reply,
I've already written to them but phoned them this morning to see if I could get anywhere. They said if I'd written then just to wait on a response - no time frame given... I'm not in any major rush - only had 4 PPL lessons so don't need a medical just yet. Anyhow, I'm guessing that if I go to the medical and they decide they need more info, it won't be a fail straight away, they'll do everything else and tell me to send a GPs report or something?
With regard to the lung function thing - I read on the caa site somewhere that as long as you can blow within 80% of the recommended level for your age, then it's fine. I'm well within this, but I'm not sure if the 80% only applies to asthmatics - and I don't know if I'm technically still asthmatic or not!!