I only have a class 2 medical but the CAA have no problem with my treated AS.
Moving on from that though my pain-free period on Salazopyrin only lasted 18 months and I am now on a newly elevated dose to try and get it under control again. If it doesn't work my consultant will have to put me on TNF but since it costs the NHS £11000 per year they only do it when NSAIDS can be shown to be ineffective.