\"It\'s a city with a big heart that\'s been wounded this week, but it will recover,\" he said.
Boyle\'s film follows a young Indian man as he rises from a life on the streets and attempts to reconnect with his lost love by appearing on the Hindi version of Who Wants to be a Millionaire.
Political drama Hunger was also a big winner on the night, with Steve McQueen honoured as a first-time director, and best actor honours for Michael Fassbender\'s transformative turn as hunger striking political prisoner Bobby Sands.
Best foreign film went to Ari Folman\'s animated memoir Waltz With Bashir, and Man on Wire about Philippe Petit\'s tiptoed tightrope between New York\'s Twin Towers, was named best documentary. The full list of winners is as follows:
BEST BRITISH INDEPENDENT FILM
Slumdog Millionaire
BEST DIRECTOR
Danny Boyle - Slumdog Millionaire
THE DOUGLAS HICKOX AWARD [BEST DEBUT DIRECTOR]
Steve McQueen - Hunger
BEST SCREENPLAY
Martin McDonagh - In Bruges
BEST ACTRESS
Vera Farmiga - The Boy in the Striped Pyjamas
BEST ACTOR
Michael Fassbender - Hunger
BEST SUPPORTING ACTRESS
Alexis Zegerman - Happy-Go-Lucky
BEST SUPPORTING ACTOR
Eddie Marsan - Happy-Go-Lucky
MOST PROMISING NEWCOMER
Dev Patel - Slumdog Millionaire
BEST ACHIEVEMENT IN PRODUCTION
The Escapist
RAINDANCE AWARD
Zebra Crossings
BEST TECHNICAL ACHIEVEMENT
Cinematography - Sean Bobbitt - Hunger
BEST DOCUMENTARY
Man on Wire
BEST BRITISH SHORT
Soft
BEST FOREIGN FILM
Waltz with Bashir
THE RICHARD HARRIS AWARD (for Outstanding Contribution to British Film)
David Thewlis
THE VARIETY AWARD
Michael Sheen
THE SPECIAL JURY PRIZE
Joe Dunton