The Military Mind - A look at the making of the story. Featuring actors Nicholas Courtney, Pik-Sen Lim and Fernanda Marlow, director Timothy Combe, producer Barry Letts and script editor Terrance Dicks. Now and Then - The latest in our long-running series visits the filming locations used in the story to see how they have changed over the years. Behind the Scenes: Television Centre - Back in 1971, presenter Norman Tozer visited BBC Television Centre to find out what went on over 24 hours in the life of what was then an incredibly busy ‘television factory’. Radio Times listings 1971 Kellogg’s Sugar Smacks promotion (thetvdb.com)