To aid the air of dishevelment surrounding Alfred Green, Terry-Thomas slept in his costume for a fortnight (two weeks) before filming, and rubbed at the suit's seams with a pumice stone.
By a curious coincidence, Sir Richard Attenborough and John Schlesinger, became both Oscar and BAFTA winners as directors (with multiple Direction BAFTAs in the case of Schlesinger, though both won additionally for producing and, in Attenborough's case, acting as well), both appeared in this movie as actors, long before either had directed a major theatrical movie (Schlesinger had only some very low-budget, independent features and television work to his name at the time, and it would be over a decade before Attenborough directed his first movie, Oh! Que Bela Guerra! (1969), for which he would go on to lose the 1970 BAFTA for Best Direction to Schlesinger and Perdidos na Noite (1969)). Aside from eventually becoming two of only a handful of Britons to ever win the Best Director Oscar, they are also the only two to have had extensive acting careers, and this movie marked the single occasion in which they appeared in the same movie, though both had previous experience in movies made by the Boulting brothers.
Leslie Phillips so disliked the experience of working with Roy Boulting that he told his agent to turn down anything else the brothers offered.
A movie distinguished by the fact that the actors included two subsequent Oscar winners (Richard Attenborough and John Schlesinger) and a double Tony winner, George Rose.
Norma Shebbeare's debut.