Robert Sommerby is a brilliant but eccentric inventor who lives in the country with his Aunt Millie and a number of humanoid robots. One, Katie ( KT ),talks like a child and has a propensity for walking through doors without opening them.

• John Clive
• Richard Davies
• Leon Lissek
• Nigel Pegram
• Brian Coburn
• Jenny Hanley
• Doris Rogers