My advice would be to apply, fill out the Medical Supplement Leaflets which will then get formally reviewed by the DoM.
I have to disagree with this. IMO just filling in the forms and leaving it to the 'process' would likely end in disappointment because Capita will most probably simply reject.
Do write to the President of the Medical Board, DOM, at OASC if you have a specific concern. This should generate a straight answer and could save a lot of time and false expectation.