US actor Robert Downey Jr and Susan Downey pose on the red carpet upon arrival at the BAFTA British Academy Film Awards at the Royal Festival Hall, Southbank Centre, in London, on Feb 18, 2024. (PHOTO / AFP)

LONDON - Oppenheimer, a three-hour epic about the making of the atomic bomb in World War II, was the big winner at the BAFTA Film Awards on Sunday, winning the top honors for best film and best director as well as five other awards.

One of the highest-grossing movies of 2023, it also won awards for leading actor Cillian Murphy, who portrays the American theoretical physicist J. Robert Oppenheimer, supporting actor Robert Downey Jr, editing, cinematography and original score.

Emma Stone picked up the leading actress award for sex-charged Gothic comedy Poor Things, which won five prizes overall

Nolan, who won his first BAFTA for directing, thanked his cast and crew in his acceptance speech.

"In the real world there are all kinds of individuals and organizations who have fought long and hard to reduce the number of nuclear weapons in the world... in accepting this I do want to acknowledge their efforts," he added.

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Like Nolan, Murphy had been favorite to win his category and in his acceptance speech, he referred to the man known as "the father of the atomic bomb".

"Oppenheimer was this colossally naughty, complex character and he meant different things to different people," Murphy said.

"One man's monster is another's man hero. That's why I love movies because we have a space to celebrate and interrogate and investigate that complexity."

Emma Stone picked up the leading actress award for sex-charged Gothic comedy Poor Things, which won five prizes overall.

US actress Emma Stone poses on the red carpet upon arrival at the BAFTA British Academy Film Awards at the Royal Festival Hall, Southbank Centre, in London, on Feb 18, 2024. (PHOTO / AFP)

Da'Vine Joy Randolph won the supporting actress prize for her role in The Holdovers, a comedy set in a boys' boarding school.

The Zone of Interest, about the commandant of Auschwitz and his family living next to the Nazi death camp, won three prizes - outstanding British film, film not in the English language and sound.

Courtroom drama Anatomy of a Fall won the first prize of the night, original screenplay. Adapted screenplay went to comedy-drama American Fiction, which is based on 2001 novel Easure by Percival Everett.

Best documentary went to 20 Days in Mariupol, journalist Mstyslav Chernov's personal account of the siege of the Ukrainian city in 2022.

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As well as the celebrities attending the ceremony at the Royal Festival Hall by the River Thames in central London, the guest list also included BAFTA president Prince William.

Britain's Prince William, Prince of Wales (left) shakes hands with former footballer David Beckham (right) during the BAFTA British Academy Film Awards at the Royal Festival Hall, Southbank Centrer, in London, on Feb 18, 2024. (PHOTO / POOL / AFP)

Known as the BAFTAs (British Academy of Film and Television Arts), the ceremony was hosted by actor David Tennant.