- The Choral
2025 Writer
- Allelujah
2023 Writer
- National Theatre Live: Allelujah!
2018 Writer
- Alan Bennett's Diaries
2016 Himself
- The Lady in the Van
2015 Writer
- Mouse and Mole at Christmas Time
2013 Mole (voice)
- National Theatre Live: 50 Years on Stage
2013 Hector
- National Theatre Live: People
2013 Writer
- National Theatre Live: The Habit of Art
2010 Writer
- Being Alan Bennett
2009 Himself
- The History Boys
2006 Screenplay
- The Young Visiters
2003 Narrator (voice)
- Did I Say Hairdressing? I Meant Astrophysics
1998 (voice)
- Talking Heads 2
1998 Writer
- Playing Sandwiches
1998 Writer
- Waiting for the Telegram
1998 Writer
- In Love and War
1996 Porter
- The Willows in Winter
1996 Mole
- The World of Peter Rabbit and Friends: The Tale of Two Bad Mice and Johnny Town-Mouse
1996 Timmy Willie (voice)
- The Wind in the Willows
1995 Mole (voice)
- The Madness of King George
1994 Screenplay
- Portrait or Bust
1994 Writer
- Selling Hitler
1993 Hugh Trevor-Roper
- Julie Walters and Friends
1991 Writer
- A Question of Attribution
1991 Writer
- A Life in Death
1991 Writers' Assistant
- 102 Boulevard Haussmann
1990 Writer
- Talking Heads
1988 Director
- Dinner at Noon
1988 Writer
- Bed Among the Lentils
1988 Director
- A Lady of Letters
1988 Writer
- Little Dorrit
1987 The Bishop
- Prick Up Your Ears
1987 Screenplay
- The Insurance Man
1986 Writer
- Dreamchild
1985 Mock Turtle (voice)
- A Private Function
1984 Screenplay
- An Englishman Abroad
1983 Writer
- Intensive Care
1982 Writer
- The Merry Wives of Windsor
1982 Justice Shallow
- A Woman of No Importance.
1982 Writer
- Rolling Home
1982 Writer
- Our Winnie
1982 Writer
- Marks
1982 Writer
- Say Something Happened
1982 Writer
- Afternoon Off
1979 Writer
- The Old Crowd
1979 Writer
- All Day on the Sands
1979 Writer
- One Fine Day
1979 Writer
- Me! I'm Afraid of Virginia Woolf
1978 Writer
- Long Shot
1978 Neville's Doctor
- A Visit from Miss Prothero
1978 Writer
- Doris and Doreen
1978 Writer
- A Little Outing
1977 Writer
- Sunset Across the Bay
1975 Writer
- A Day Out
1972 Writer
- Every Home Should Have One
1970 Defence Solicitor
- Hamlet
1970 Osric
- Alice in Wonderland
1966 Mouse
- The Drinking Party
1965 Eryximachus
- Beyond the Fringe
1964 Writer
