Thin Man Films is a British film production company, based in London. It was founded in 1988 by director Mike Leigh and producer Simon Channing Williams to produce Mike Leigh's films. They chose the company name because both founders were the opposite of it. Following Channing Williams' death from cancer in 2009, producer Georgina Lowe, who had assisted in the production of all Mike Leigh films since 1993, became the company's main producer, and in 2011 Mike Leigh made her his new company partner. Gail Egan has also been involved in the production of Mike Leigh's films since 2004.