He is closely associated with the Doctor Who franchise as the only person to have directed episodes of
Doctor Who (1963) and
Doctor Who (2005). He also directed episodes of
The Sarah Jane Adventures (2007). His work as a director on
The Caves of Androzani: Part One (1984) and
Revelation of the Daleks: Part One (1985) was widely acclaimed.
Peter Davison has stated on several occasions that he was the best director he worked with on the series. He was also asked to direct
Battlefield: Part One (1989) but was unavailable. There was much excitement when he was announced as the director of the 30th anniversary special "The Dark Dimension", but this project was abandoned.