Quentin Tarantino thanked his actors for doing a "bang-up job with my dialogue" in his acceptance speech.
His screenplay for Django Unchained has attracted criticism for its liberal use of racial insults and Tarantino thanked his backers for standing by what he described as "a hot potato" film.
Stars braving the rain-soaked red carpet at the Bafta awards chose to play it safe, with many dressing in black.
Argo was the big winner at the Bafta awards, scooping Best Film, Best Director for Ben Affleck and Best Editing.
Daniel Day-Lewis's dominance of awards season is expected to continue at the Baftas tonight, where he is the favourite to win Best Actor.