By Joshua Rich
Updated April 14, 2009 at 10:50 PM EDT

Simon Channing-Williams, the longtime producer of movies by filmmaker Mike Leigh, died on Tuesday of cancer at age 64, the BBC is reporting. The Britain-based Channing-Williams earned a Best Picture Oscar nomination for Leigh’s 1996 drama Secrets & Lies. The pair’s 20-year collaboration also spawned the movies High Hopes, Life Is Sweet, Naked, Topsy-Turvy, Vera Drake, and last year’s acclaimed dramedy Happy-Go-Lucky. Channing-Williams also produced 2002’s Nicholas Nickelby and 2005’s The Constant Gardener.