Sir Joseph is the Head of MI5’s top secret Section G surveillance team. Originally recruited whilst studying Art History at Cambridge in the 1970s, he never really understood why they’d targeted him, but nevertheless took to the job with gusto, making sure he memorised every John Le Carre book. Never actually involved in Field Operations per se, he elected instead to work his way up through the deskbound hierarchy, moving smoothly through the ranks until he reached the very pinnacle of the organisation.
Keeping his head down and his hands clean, Sir Joseph now controls his Operations Teams tightly, making sure he passes on all he has learned. Which isn’t much, to be perfectly honest.