Simon Lack

Simon Lack appeared in two Doctor Who stories: as Professor Kettering in The Mind of Evil and Zadek in The Androids of Tara.

Simon Lack (originally Alec MacAlpine) was a Scottish actor who appeared in pre-World War II films such as Goodbye, Mr Chips. After the War he worked in television and radio (he was on the BBC Drama Repertory Company in the 1950s) as well as on stage. His TV appearances included roles in South Riding, Dixon of Dock Green and the original Dr Finlay's Casebook.

On radio he played John Tregorran in The Archers and was a regular without a fixed role in the Paul Temple serials.