its not really an issue of getting struck off, he'll be in prison for about 20years once out he'll either blow himself up and do a proper job of it this time.
once he's out he'll not be able to be a doctor due to the period of time which has elapsed
You mean he can't practise as a doctor in prison? He could write out scripts for the other inmates LOL The prison medical service might be grateful for his easing their workload !
A doctor is surely not automatically disqualified by the General Medical Council, whatever he does, since he's entitled to a hearing of the issues.No doubt they will issue the proceedings and he probably won't contest the matter.(Who knows? He may have a defence !)