Postpublished at 21:52 Greenwich Mean Time 7 December 2014
Best director:
Yann Demange - '71
Awards celebrate British films made for less than £20m
Pride wins three awards including best film
Brendan Gleeson wins best actor for Calvary, Gugu Mbatha-Raw wins best actress for Belle
Emma Thompson receives Richard Harris Award for outstanding contribution to film
Genevieve Hassan and Victoria Lindrea
Best director:
Yann Demange - '71
Accepting her award, Gugu Mbatha-Raw said it was "an honour and a privilege to be included with the other nominees."
She thanked her fellow cast members and her parents for their "unwavering support".
Tim Masters
Entertainment correspondent, BBC News
Andrew Scott, who won best supporting actor for Pride, said the real people who the film is about "said that it was their fear that this story would go to their graves".
"Everything in Pride is true. The fact that the story is out there is just a bonus. People across the country are clapping at the end of this film."
Quizzed on his recently announced role in next year's James Bond film, Scott said he was used to keeping plot lines under wraps after working on Sherlock.
"I'm quite used to keeping secrets - you just learn to nod and smile. I'd think it would be so weird to start giving the plot away," he said.
Best actress:
Gugu Mbatha-Raw - Belle
Guest enjoyed a sit-down dinner during the ceremony, so even those who went home empty-handed went home with a full stomach!
Best achievement in production:
The Goob
Tim Masters
Entertainment correspondent, BBC News
Producers of best documentary winner, Next Goal Wins, told me: "It's been a word-of-mouth hit. It's an extraordinary story.
"We've had people contact us from Peru and Indonesia about the film.
"In Japan, people turned up to screenings in football kits. There are people around the world who genuinely want to buy American Samoan football kits."
Best screenplay:
Jon Ronson and Peter Straughan - Frank
Best debut director:
Iain Forsyth and Jane Pollard - 20,000 Days on Earth
Arriving on stage to accept his award after a montage of his work played on screen, Benedict Cumberbatch said: "It's a strange experience to have your career flash before your eyes. I've never been more nervous in my life.
He thanked his fiancee, Sophie, his family, and the many different members in any given film crew who are part of the British independent film industry and make it "a world leader".
"This award will inspire me to work harder, to make me feel like I deserve it - which won't be difficult because I love my job," he added.
Variety award:
Benedict Cumberbatch
Clare Haddad tweets, external:
"What does Michael Fassbender have to do to get recognition? Come on."
Staunton was not at the ceremony, but Pride director Matthew Warchus accepted the award on her behalf.
He described her as "a total joy", adding it was "brilliant that she's won". Warchus said the actress was "gold and shimmering, right at the heart" of the film.
Passion pods tweets, external:
"Best documentary: Next Goal Wins #mbifas - "def worth coming out of hibernation to shout about. huge fat well dones!"
Best supporting actress:
Imelda Staunton - Pride
Best British short:
The Karman Line
Tim Masters
Entertainment correspondent, BBC News
Director Richard Linklater said Boyhood took 12 years to film.
"We think we're the longest scheduled film production in history," he said.
On early Oscars buzz, he added: "We came out early, so it's flattering that people are still talking about us months later.
"I don't know any film-makers who make films to win awards. But it's not a burden."
Tim Masters
Entertainment correspondent, BBC News
Best technical achievement winner, Stephen Rennicks, was writing songs as Frank was being shot.
"There were times that were fun, but most of it was terror," he joked.
Best supporting actor:
Andrew Scott
Boorman was not at the ceremony, but his son, Charlie, accepted the award on his behalf.
Charlie called it "a fantastic excuse" that his father, who turns 82 this month, could not attend because he was away "promoting his latest film".
He read out a speech from his father. In it, John Boorman said: "Anything achieved through independent film-making means one has sweated blood to make it."