Davenport's acting career included work in the West End and on tour in regional theatres, performing in plays and musicals.

[10] In 2016 he voiced Harbourmaster Van Zandt and other characters in the video game Nelly Cootalot and the Fowl Fleet.

[11] In the 1980s Davenport worked in the Unilever advertising agency Lintas, and then as a theatre manager with the Stoll Moss group.

In 2007, Davenport wrote the script for The Double Life of Saki, produced and directed by Andrew Hutton for the BBC series The Edwardians: the Birth of Now.

[citation needed] In addition, he has written several Young Adult novels, including the dystopian tale Wanderer, which went into paperback in 2016.