Since the 1950s, Maude-Roxby has positioned his work between theatre and visual art, working between and across performance, poetry and improvisation. His visual art is informed by attention to surfaces and a playful improvisatory and iterative process, where one mark suggests another, until another day, or another work begins.

Much of his work is associative, and appropriates found objects, discarded low-grade materials found on the street, aquired from broken, or damaged everyday materials. Works from earlier decades are often reworked and represented.

Maude-Roxby was a founding member of Britain’s first Improvisation and Mask Theatre; Theatre Machine. Theatre Machine developed out of the Royal Court Studio from around 1964 and remained under Keith Johnstone’s direction until 1971, continuing without a director until the 1980s.

Other notable productions include Maude-Roxby’s part in sketch show comedy series The Complete and Utter History of Britain (1969) alongside Terry Jones and Michael Palin, who subsequently produced Monty Python. The following year, Disney realeased The Aristocats (1970) on which Maude-Roxby voiced the butler Edgar.