You certainly can do it but obviously this needs to be in your holidays! Know of at least 1 cadet who has done it. Probably easiest way is to ask Camberley for permission to be attached to a RMR unit or other TA commando unit in writing and get them to sort it out for you. They may also 'help' you by beasting you before you arrive for the course. Why not do P company - it takes up less time and there are more jobs for airborne than commando docs.
thanks very much for your reply.actually i will be applying for RN cadetship and not RAMC thats why im considering the commando course.i didnt find anywhere to get that information that is why i posted it here.thanks anyway