On Sunday on the Marr show, Nicola Sturgeon stated the obvious. The case for independence is not affected by legal difficulties faced by any individual. If indeed it were the case that personal legal problems had constitutional implications, then given the number of legal issues which have been faced by British politicians, Westminster would be indistinguishable from a smouldering crater in the aftermath of a nuclear strike.  The only certainty in the British state these days is that almost everything is uncertain.