IIRC he (more accurately his barrister) more or less hinted during his trial that he was so ill he could die at any time. How long ago is that now?
The barrister was the late George Carmen QC, who was famous for that sort of thing. Essentially, his line of defence to the jury during the trial was: "Yes, he's guilty of tax offences, but don't you just love him?" It worked!