Peter Tuddenham was a renowned voice actor, noted for his radio roles as well as being the voice of the intelligent computer in Blake’s Seven.

He played three voice roles in Doctor Who.

In 1975 he was the voice of the computer in The Ark in Space.

In 1976 he was The Mandragora Helix in The Masque of Mandragora.

And in 1987 he was the giant brain in Time and the Rani.