Knight has written for TV series in the UK including Peaky Blinders, BBC's Commercial Breakdown (with Jimmy Carr), The Detectives, Comedy Playhouse (the episode "Wild Oats" in 1993), Frankie's On..., Auntie's Big Bloomers, and Canned Carrott.
Knight has also directed two films which he also wrote the screenplays for, Hummingbird (2013) starring Jason Statham and most recently the technically innovative Locke (2014), starring Tom Hardy in a car fielding hands-free phone calls throughout the entire movie. Locke won a British Independent Film Award in 2013 for Best Screenplay. Knight has also directed several episodes of the TV series he frequently wrote for, The Detectives. In 2018 the sexy thriller Serenity (also written by Knight) starring Matthew McConaughey, Diane Lane, and Anne Hathaway will be released.
Recent films based on screenplays that Knight has written include The Hundred-Foot Journey directed by Lasse Hallström, based on the book of the same name by Richard C. Morais, and starring Helen Mirren, Seventh Son, an adventure story starring Jeff Bridges, Julianne Moore, Djimon Hounsou, Kit Harington and Jason Scott Lee, as well as the film Pawn Sacrifice, based on U.S. chess champion Bobby Fischer, with Tobey Maguire playing Fischer in the film. He wrote also the screenplay of World War Z II, which will start shooting in October 2015.
