"Slumdog," which revolves around an impoverished Indian teenager, won outstanding film, director for Danny Boyle, adapted screenplay for Simon Beaufoy, music, cinematography, editing and sound.
The British Academy Film Awards, presented by the British Academy of Film & Television Arts, is considered England's version of the Academy Awards.
"Slumdog" seems to be an unstoppable force this movie-awards season -- it swept the Golden Globes, recently won a top Screen Actors Guild Award, as well as the Producers Guild of America prize.
Boyle also won the Directors Guild of America Award and Beaufoy won the Writers Guild of America Award for adapted screenplay Saturday evening. "Slumdog" is nominated for 10 Academy Awards and is considered the odds-on favorite to win the best film Oscar.
"The Curious Case of Benjamin Button" earned three BAFTA Awards, for production design, hair and make-up, and special visual effects.
Kate Winslet was named outstanding actress for "The Reader" during the ceremony Sunday evening at London's Royal Opera House. Winslet, who is nominated for a best actress Oscar for her performance as a former Nazi prison guard, previously won a Golden Globe and a SAG Award in the supporting actress category for "The Reader."
Mickey Rourke, who won the Golden Globe and is nominated for an Oscar, won the BAFTA for outstanding actor as an aging athlete in "The Wrestler."
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The late Heath Ledger, who also won Globe and SAG honors, earned a BAFTA for supporting actor as the Joker in "The Dark Knight." And Oscar-nominee Penelope Cruz received the supporting actress award for her role as an obsessively jealous ex-wife in "Vicky Christina Barcelona."
Other awards presented Sunday:
Original screenplay: Martin McDonagh, "In Bruges."
British film: "Man on Wire"
The Carl Foreman Award: Steve McQueen, director-writer of "Hunger"
Film not in the English language: "I've Loved You So Long"
Animated film: "Wall-E"
Short animation: "Wallace & Gromit: A Matter of Loaf and Death"
Costume design: Michael O'Connor, "The Duchess"
Short film: "September"
Orange rising star: Noel Clarke
Academy fellowship: Terry Gilliam
Outstanding British contribution to cinema: Pinewood Studios/Shepperton Studios.