Alfie Allen pays tribute to 'Game of Thrones' body double Andrew Dunbar after his sudden death

]Alfie Allen attends the AMPAS New Members Event at Freemasons Hall on October 05, 2019 in London, England. (Photo by Dave J Hogan/Getty Images)

Alfie Allen has paid tribute to actor Andrew Dunbar, his Game of Thrones body double who passed away on Christmas Eve.

Dunbar, who doubled up for Allen in his role as Theon Greyjoy, died suddenly at his Belfast home on 24 December. He was in his 30s.

Taking to his Instagram Stories, Allen posted: "Andrew was an actor who was also a stand-in as Theon on GoT. Extremely shocked and saddened to hear of his passing.

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"To lose a loved one so young, I can only imagine what his family are going through. RIP Andrew xxx."

As well as acting as a body double, Dunbar also appeared in episodes of the hit series as a background artist.

He'd also enjoyed roles in Derry Girls, Line of Duty and Krypton during his acting career.

A spokesperson for his agency, The Extras Dept said in an Instagram post: "To say we are shocked and saddened at the passing of Andrew Dunbar is an understatement.

"We have so many fond memories of the years Andrew worked with us. He was so versatile we could cast him in anything, he was such a talented performer he would always end up being featured, and he was so adored that he was always requested by productions again and again."

They added: "But most of all he'll be remembered by his kind soul and infectious personality. Thank you for all you did for us Andrew. We will miss you dearly."