The menial studio worker who provides Jason with a chair at Elstree is called Cyril, presumably a nod to the episode's director Cyril Frankel.
A great many of Jason's novels are glimpsed, notably "From China Yours Sincerely", "Index Finger Left Hand" and "A Page Before Dying".
ITC adventure series writing stalwarts Philip Broadley and Tony Williamson both receive a tongue-in-cheek reference as authors with potentially criminal inclinations by Griffin of The Screen Writers Society.
Scratched onto the film of Michael Strong reviewed by Jason and Claire are the words "The Invisible Man end of Reel 2", intimating that some of the basic footage hails from ITC's earlier series The Invisible Man (1958).
Jason is polishing the script of "Double Take", a film lensing at Elstree.