Got all but one though I don't begin to see how some of the clues work and it seems to me that Brummie is pushing at the limits of the legitimate. However: 28a Doctors reckon thousand lost (old money)...
5dn & 17Ac Policeman fixing the gravy for maker of 7s (6,8) ?????? ???W???? 15ac & 7dn Such as 17's cloistered soliloquy, a pet going back into possible 45 (4,4) ???? ????