From an episode of the British television series The Human Jungle (04/06/1963).
Pop singer Danny Pace (Jess Conrad) is hallucinating, seeing his own reflection taunting him. His manager Laurie Winters (Annette Carell) calls in pyschologist Dr. Robert Corder from this BBC show. Dr. Carder was played by Herbert Lom, later better known as Chief Inspector Dreyfus, the Pink Panther movies' straight man foil to Peter Sellers' Inspector Clouseau.
Bizarrely, in the 1963 musical Summer Holiday, in a shot of a newspaper article about other fake singer Barbara Winters, there's another article about Danny Pace, claiming his window smashing at a recording studio was purely accidental. Thank you DVD freeze frame!