Darkest Hour actor Samuel West has delighted fans by providing a glimpse behind the scenes of the Oscar-tipped film about wartime leader Winston Churchill.

A clip posted by the star on Twitter shows 450 actors playing MPs singing a rousing rendition of The Beatles’ Hey Jude in the House of Commons.

They then applaud as Gary Oldman, who plays Churchill, enters the room.

West, who plays former foreign secretary Sir Anthony Eden, wrote alongside the video: “Been waiting to post this for a year. Joe Wright, director of Darkest Hour, leads 450 MPs in a warmup sing of Hey Jude between takes. Gary Oldman as Churchill makes an entrance at the end.”

West also shared a series of photos to celebrate the film’s release, including snaps of Oldman’s Churchill at the despatch box and director Joe Wright.

The political chamber was recreated at Leavesden Studios near Watford. Kristen Scott Thomas, who also stars in the film, told Sky News it was a “very magical set”.

:: Gary Oldman’s Churchill transformation in Darkest Hour ‘uncanny’, say co-stars

Lily James

‘Audible gasp’ as stars witness Oldman as Churchill

The film also stars Lily James, Stephen Dilliane and David Schofield and focuses on Churchill’s handling of the Second World War.

James has spoken of the cast’s “audible gasp” at seeing Oldman’s transformation into Churchill.

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The role has so far earned Oldman, 59, best actor awards at the Golden Globes Critics Choice awards, as well as a Bafta nomination for best leading actor, and the film is also tipped for the Oscars.

:: The Darkest Hour is out in UK cinemas now