Name	Known for
John Castle Mark Penmar Mark Penmar See fewer	The Lion in Winter (1968)
Angela Scoular Maud Castallack Maud Castallack See fewer	On Her Majesty's Secret Service (1969)
Ralph Bates Laurence Castallack Laurence Castallack See fewer	Dr Jekyll & Sister Hyde (1971)
Paul Darrow Robert Yorke Robert Yorke See fewer	Blake's 7 (1978)
Thomas Ellice Mark Castallack (as Martin C. Thurley) Mark Castallack (as Martin C. Thurley) See fewer	Devices and Desires (1991)
Shaughan Seymour Giles Penmar Giles Penmar See fewer	Flawless (2007)
William Relton Raymond Penmar Raymond Penmar See fewer	Slumdog Millionaire (2008)
William Humbert Harry Penmar Harry Penmar See fewer	Penmarric (1979)
Lesley Dunlop Clarissa Penmar Clarissa Penmar See fewer	The Elephant Man (1980)
June Marlow Fishwife Fishwife See fewer	Doc Martin (2004)
Maurice Quick Medlyn Medlyn See fewer	The Pallisers (1974)
Paul Spurrier Young Mark Castallack Young Mark Castallack See fewer	Eullenia (2018)
Paul Satvendar Indian Servant (as Paul Satvender) Indian Servant (as Paul Satvender) See fewer	Gangsters (1976)
John Oakden Carriage Driver Carriage Driver See fewer	The Onedin Line (1971)