It's been a while but I am glad to report that the visit to the CAA went well. It was a very professional and polite experience. The relevant questions were asked and answered. I supplied the medical notes from my GP (about 3 weeks prior to the appointment).
No problems, no limitations or restrictions. I was reminded that supplying all the information and declaring thoroughly is the easiest path to follow.
If anyone goes through a similar experience I would suggest getting on the phone to Gatwick and explaining your situation. Any decisions are taken by medical professionals, they treated me with respect and exceeded all my expectations.