A Matter of Loaf and Death failed to win for Nick Park
British nominees at this year's Oscars have failed to walk off with a clutch of prizes at the ceremony in Hollywood.
Acting hopefuls Carey Mulligan, Colin Firth and Dame Helen Mirren were outbid by their US rivals.
Wallace and Gromit creator Nick Park was unable to add a fifth Oscar for his work in animation.
The Young Victoria costume designer Sandy Powell and Ray Beckett, one of the sound editors on The Hurt Locker, were the only British winners.
London-born Powell said: "Of course I'm thrilled to be a winner at all. But a British winner, yes, I'm happy for the Brits."
She added that her win might be reported this year given the lack of British acting success.
Fellow Briton Barry Ackroyd, who was up for the cinematography award for Hurt Locker, was one of the few losers from the night's most successful film.
Other Britons who return home empty-handed include Nick Hornby, who was nominated for his adaptation of An Education.
Briton Sandy Powell won for her work on The Young Victoria
The British writing team behind political satire In The Loop, including Armando Ianucci, also failed to convert their best adapted screenplay nomination into a statuette.
And Jenny Shircore, make-up artist on The Young Victoria and a previous Oscar winner, lost out in her category to Star Trek.
Firth and Mulligan, nominated for best actor and actress for their roles in A Single Man and An Education respectively, were left disappointed after winning at the Baftas in London earlier this month.
Instead, the Academy favoured its own home-grown acting talent, Jeff Bridges and Sandra Bullock.
Dame Helen, in the running for her performance as Leo Tolstoy's wife in period drama The Last Station, was unable to repeat her 2008 best actress triumph for playing the Queen.
Briton Kate Winslet took the best actress Oscar last year for her role in The Reader.