LONDON -- Neil Fingleton, a 7-foot 7-inch actor who played the giant Mag the Mighty in “Game of Thrones” has died at 36.

The Tall Persons Club says Fingleton, who was Britain’s tallest man, died Saturday. British media reported the cause as heart failure.

Fingleton was recognized by Guinness World Records in 2007 as the U.K.’s tallest man.

Born in northeast England in 1980, Fingleton told the Guinness records website in 2006 that “I have always been taller than everyone since I can remember.”

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His height made him a basketball natural, and Fingleton played college basketball in the United States for the University of North Carolina and the College of the Holy Cross in Worcester, Massachusetts.

He went on to a short professional basketball career in the U.S. and Europe before turning to acting.

He appeared in films including “417 Ronin and “X-Men: First Class” and in TV shows including “Doctor Who” and the hit fantasy series “Game of Thrones.”

In the “Games of Thrones” the fearsome Mag was a giant on the northern side of the great ice wall that was guarded by Lord Commander Jon Snow and the black-clad men of the Night’s Watch.

Tributes to Fingleton poured in on social media:

Sad to hear about #neilfingleton - very cool guy who made me look like a 12 year all over again #RIP pic.twitter.com/zNdGRJiF4z — tom payne (@tompain100) February 26, 2017

RIP Neil Fingleton -basketball player and @GameOfThrones actor. Just 36-years-old. Thoughts with his family & friends [a Durham lad as well] pic.twitter.com/iw0zFuvHgL — Paul Nilsen (@basketmedia365) February 26, 2017