The best source for this period, I’ve found, is the BBC documentary ‘The Street’, told by the main people then still alive that were there. That and the British Library Oral History Sound Archive, which were no doubt key sources for this dissertation/book.
At £100 I’ll pass - and hear it from the ‘horse’s mouth’ !
Surely the Club 11 crowd had to go on those Queen Mary trips, see Bird etc. and bring the records back and disseminate, which would have taken it well past 1945. Admittedly Art Pepper was a military policeman in London during the tail end of WW2 in London but I guess he doesn’t factor strongly at this stage.