Thanks to all, and for reminding me of several I'd forgotten.
Re the Dam Busters March, I heard recently that Coates had actually composed it for some other purpose?
Like tradigraph, I think Walton's score for the Battle of Britain, ("Battle in the Air"?) is chilling and fantastic. Did he write "Spitfire Prelude and Fugue" for First of the Few ?
I absolutely agree that the sounds of aero engines can be even more evocative than music. Off topic, the sound of Merlins from (the Spanish) Bf 109s and He 111s slightly spoiled the Battle of Britain for me. I wonder if that could be fixed.