Sandy, Rumpole was true ! Really, it was, and written by a a practising QC. Rumpole himself was exactly like my old pupil master, later His Honour Judge Bolland; always wearing a waistcoat covered in cigarette ash, liked a quick whisky at lunch, had a wife who we never saw but whom he always spoke of in terms which translated into "she who must be obeyed".......But he had a fund of common sense, could see a weakness in a case as though it was obvious to all, was a good cross-examiner, mainly because he had the common touch and witnesses trusted him, and knew far more law than his appearance would ever suggest. And he had ring craft. I once saw him lie in order to get his appeal shifted from one Appeal Court ("They'll never find for us, with that judge in charge") to another (" Let's get this one; one of them dissented in our favour on the law and he's now in charge"). He won the appeal. That's what the job is about.
And there are 'radical' chambers (human rights etc), just as there are chancery chambers, tax chambers, shipping chambers, patent chambers, European law chambers and all the rest.