Ellis (The Daleks' Master Plan)

Ellis (PROSE: The Mutation of Time) was a station sergeant, epaulette number 437. He walked out outside of his Liverpool police station on Christmas Day, 1965, and discovered the Doctor's TARDIS, in the shape of a police box standing there. A policeman and his partner arrived in their patrol car, and he directed them to watch the police box whilst he referred the matter to the Detective Inspector.

Back at his desk, the station sergeant was approached by a man in a Mackintosh who wanted to lodge a complaint: rebels were repeatedly moving his greenhouse. (TV: The Daleks' Master Plan)

Behind the scenes
In the novelisation, the sergeant is given the name Ellis. This is in reference to James Ellis, who played a police sergeant in the series Z-Cars. During the original production of The Daleks' Master Plan, a crossover with the cast and setting of Z-Cars had been intended for the police station scenes, until the idea was rejected by Z-Cars producer.