An actor/auteur/novelist and producer, Gregory trained at The Royal Academy of Dramatic Art, among his early theater performances A Midsummer Night’s Dream at The Old Vic opposite Daniel Day Lewis; King Lear at The Young Vic; the world premiere of Bent at The Royal Court with Ian McKellen; Barbarians at The Soho Rep with Kevin Spacey, the American premiere of Harold Pinter’s One For The Road at The Manhattan Theatre Club with Diane Weist directed by Alan Schneider, and the title roles in Hamlet and Peer Gynt at The Guthrie Theater, Minneapolis.

In 1984 he starred in the CBS mini-series Ellis Island opposite Liam Neeson, Natasha Richardson, Richard Burton, and Faye Dunaway. Asked to test for James Bond as a result, he lost the role to Timothy Dalton because the producers felt he was too young for the role. Accepting an offer from Universal Television to create and write his own series, Gregory moved out to Hollywood, selling his first screenplays to Sony Pictures and Jerry Bruckheimer, the beginning of what has subsequently become a prolific writing career.

In 2019 he founded King of Kings Worldwide, his own production company in London, every one of its rich slate of film, television and theater projects written by him. Going into production in 2023 are Strange Days, a dark comedy feature about Jim Morrison of The Doors; The Circus, the Mad Men of rock n’ roll; Werewolves of London, a comedy spoof of the classic horror genre set in Soho, London; and Redemption, a terrifying serial killer thriller with an occult twist described as The Silence of the Lambs meets American Psycho.

In 2023 he will perform a double bill at the The Edinburgh Festival Fringe -- Pinter's One For The Road, and a self-penned comedy, Dirty Rotten Scoundrel.


The eldest son of Beatles producer, Sir George Martin, his wife, Cherie Rose Martin, is a one of the leading luxury lifestyle travel matchmakers in the world, known in her industry as The Bubbly Bon Vivant.