Trivia

The pub that the heroine is summoned to is The Winning Post, Chertsey Road, Twickenham and also appears in The Sweeney episode The Placer (1975).

Arthur English, the music hall and radio comedian, plays a punter in a betting shop. As he is about to place a bet, he says, "Open the cage". This was his catchphrase.

The plane crash footage was also used in Village of the Damned (1960).

Dermot Walsh and Arthur English receive 'Guest Artists' credits.