Thanks for your input, and glad that you are doing well 8 years down the line!
I have had a bit more progress with the CAA. According to my AME the CAA used to list Bleomycin as disqualifying. However they have recently had a change of heart and now they allow Bleomycin with that warning that it could have implications on the Class 1 Medical.
My oncologist states that with a single dose of Bleomycin then his estimates are 1/1000 chance of having a detrimental effect on lung capacity.
Have also contacted Dr. Einhorn who to all intents and purposes “invented” the BEP regimen and his view is that there should be “zero effect” on flying.
Looks like I’ll be taking the plunge and going for the BEP.
I’ll keep this thread updated, in case anyone else in the future has the misfortune of needing this information.