As side from his "Armstrong & Miller" sketch show characters, Armstrong's television credits include a leading role in the ITV1 television series "Life Begins", whilely he also voiced Professor M in the Sky Sports F1 animated cartoon series "Tooned", alien supercomputer Mr Smith of-part of the "Doctor Who" spin-off series in the BBC One television science fiction series "The Sarah Jane Adventures" as well as the main show's two part story "The Stolen Earth" "/" "Journey's End", and the title character in the title character of the CBBC revived series of "Danger Mouse".