Other than the famous "he appeared as an extra in Goodbye Mister Chips", it strikes me that I really don't know anything about Chetwynd-Hayes before he took up full-time writing beyond the fact that he was born in Isleworth, Middlesex. Perhaps we could use a thread for the little snippets that turn up here and there, like this, from the thumbnail portraits at the back of Amy Myers' The Third Book of After Midnight Stories (Kimber, 1987).
"... before becoming a full-time writer he was a salesman and assistant buyer in Harrods, The Army & Navy Stores and Bourne & Hollingsworth, then showroom and exhibition manager for Peerless Built-In Furniture. During the war he was evacuated from Dunkirk and then returned to France on D-Day plus 6."
Another decent resource:
Skeleton Crew: Sept. 1990 (Argos Specialist Publications: ed. Dave Reeder).
James Herbert on comic books, Brian Lumley story Grotesques Before Nine, Joe Dante on Gremlins, and a Swamp Thing feature, but of most interest to us for Stephen Jones & Jo Fletcher's Talk Of The Devil, a Chetwynd-Hayes interview-cum-career overview. Also features his original short A Walk On The Dark Side: Henry, wheelchair-bound after a previous attempt on his life, drowns when wife Mary pushes him into the river, leaving her free to marry his best friend, Leslie Bromley. in death Henry discovers that he is able to enter each of their minds and control their actions at will. He manipulates Mary into first battering Bromley with the bedside lamp and then telephoning the police to confess to both murders.
From the first, I set myself against "literature"; the story was the thing, and no amount of style could persuade me to select a story that lacked genuine, unadulterated horror. For those who wanted something high-brow there was plenty.