HOLLYWOOD star Mark Strong has been spotted filming for Steven Spielberg’s World War One epic, 1917, in Glasgow.

The English actor, who appeared in Zero Dark Thirty and Tinker Tailor Soldier Spy, was seen on set at Govan Graving Docks, where a set has been constructed for the wartime drama.

The film is a collaboration between Steven Spielberg and writer and producer Sam Mendes, who first worked together on smash-hit American Beauty, released in 1999.

Oscar-winner Mr Mendes, 53, was spotted on set dressed in a black flat cap, enthusiastically gesticulating to actors.

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He wore a black polo neck sweater and a fleece, as two actors dressed in military costume from the era followed him around the set.

Mark Strong wore an officer's uniform and a green cap, while actor George MacKay wore a tin hat as they shook hands on the set.

Mr MacKay's hands appeared to have blood on them, during scenes set in a battle in Northern France.

The hotly-anticipated film has a cast including Richard Madden, Benedict Cumberbatch, Colin Firth, Dean-Charles Chapman and Andrew Scott.

But the plot remains a secret, although it is said to follow two British soldiers in the course of one day during the First World War.

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A pump house had been converted, apparently into a dock house found near a lock.

Stencilled words on the side of a building read 'Ecoust-St. Mein'- the name of a village in Northern France, near Bapaume.

The village is now the site of a Commonwealth War Graves Commission Cemetery.

Loud bangs could be heard on set suggesting live blank ammunition was being used on the set.

Vintage Army vehicles from the era could be seen on set, along with wooden barrels.