Plays:
* The History Boys (2004)
* Forty Years On (1968)
* The Lady in the Van (1999)
* Habeas Corpus (1973)
* Enjoy (1980)
* Talking Heads (1988-1992)
Screenplays:
* The Madness of King George (1994)
* Prick Up Your Ears (1987)
* The Lady in the Van (2015)
* An Evening with Alan Bennett (2016)
Television Series:
* Talking Heads (1988-1992)
* The History Boys (2006)
* Talking Heads 2 (2020)
While he has written for these projects, he has not appeared in them as an actor. However, he has made some cameo appearances in a few documentaries and television specials about his life and work.
To be clear, Alan Bennett is a celebrated writer, and his contribution to theatre, film, and television is significant. His work has been adapted for the screen and stage, and he has occasionally made cameo appearances in projects about him.