'A Full Head of Steam' by Bob Block

Having recaptured the duplicate Robert, whom they now believe to be the inventor’s twin brother, Marken and Plummer watch in dismay as the canal water inside the robot’s body overheats, causing steam to pour out of his head; terrified that their prisoner is seriously ill with a dangerous disease the two spies immediately dump him outside Robert’s research laboratory. Meanwhile, Eric learns of the government’s cut to Robert’s funding, and decides to help; setting up a secret meeting with his fellow robots, Eric goes over his first idea for a money-making venture: a baby-minding service...

John Clive (Robert Sommerby / Robot Robert), Nigel Pegram (Eric / Parrot Voice / Mini Voice), Brian Coburn (Katie [K.T.]), Doris Rogers (Aunt Millie Townsend), Leon Lissek (Stanislav Marken), David Pugh (Plummer), William Lawford (Robot George)

Produced and Directed by Vic Hughes

TX (ITV):
18th November 1974

Notes:
*Featuring Robert Sommerby, Eric, Katie and Aunt Millie