Kemp, on the left.

Barry Ashton is a man who was ever in the background in Doctor Who. In The Moonbase in 1967 he was one of a group of actors listed simply as "Scientist". in 1972 he was proctor, a civil service man who was standing in the background in two scenes of The Time Monster. In Frontier in Space, in 1973), he was Kemp, third of a three man space rescue team.

Proctor - on the left

Proctor - in the middle.