Robert Jewell was a Dalek Operator in the first Dalek serial - The Daleks - in 1963/1964, in Dalek Invasion of Earth, 1964, Dalek Masterplan, 1965/1966, The Power of the Daleks (1966) and The Evil of the Daleks (1967)

He was an uncredited Dalek seen in The Doctor's deposition to the Time Lords in The War Games, (1969). He was also a Dalek operator in the 1965 and 1966 Peter Cushing film adaptations of The Daleks and Dalek Invasion of Earth.

Dalek Masterplan

Power of The Daleks

Evil of The Daleks

Robert also played a Zarbi in The Web Planet (1965) and as Macra in The Macra Terror (1967)

Zarbi

Macra