Guest Stars Bill McGuirk as Policeman Pat Gorman as Auton Leader Terry Walsh as Auton Policeman Dave Carter as Museum Attendant John Baskcomb as Rossini Christopher Burgess as Professor Philips Andrew Staines as Goodge Stephen Jack as Farrel Senior David Garth as Time Lord Norman Stanley as Telephone Mechanic Roy Stewart as Strong Man Barbara Leake as Mrs. Farrel Frank Mills as Radio Telescope Director Dermot Tuohy as Brownrose Michael Wisher as Rex Farrel Hayden Jones as Auton Voice Harry Towb as McDermott
