Second of three appearances by John Tatham, the others being E1, The Guilty Party (1962) and E6, The Invisible Asset (1963). All three roles were uncredited.
The second of two uncredited appearances by Fred Machon, the first being in S1 E1, The Guilty Party (1962).
The first of two uncredited appearances by George Holdcroft, the other being in S1 E10, Company of Fools (1966).
The first of two uncredited appearances by Harold Sanderson, the other being in S1 E13, Payment in Kind (1966).
Closing credits: The events and characters depicted in this film are fictitious. Any similarity to actual persons, living or dead, is purely co-incidental.