The man himself was featured in "Secrets of the Transport Museum", Freeview Yesterday Channel, Tuesday March 15. 8PM or on streaming service UKTV Play. Series2/Episode7.
As I post this SHMBO asks "What's so good about AM?". I retort "He's the sort of guy who can produce a working super engine with just a hacksaw blade, a nail file, broken razor blade and the sandpaper strip from a matchbox'." "You can't?" was the reply. The sarcasm was wasted, it fell on my deaf ears. I'll just say he's a genius.
Swarfy.