vctenderness, good luck with your search for information. 75 Squadron started World War II flying Wellingtons. They converted to Stirlings and finished the war flying Lancasters. IIRC, they were in 3 Group. (Sorry, my references are at the other end of my commute.)
I'm sure that a lively discussion could evolve around the respective merits of the 3 British designed Royal Air Force W.W. II four engined bombers, but the gallantry and dedication of both the air and ground crews is beyond reproach.