Game of Thrones actor Neil Fingleton died at the age of 36 on Saturday following a heart failure. Felington, a former basketball player, is best known for playing Mag the Mighty in hit TV show Game of Thrones.

Fingleton was the tallest man in the United Kingdom, standing tall at seven feet and seven inches. His death was announced on the Tall Person Club’s Facebook page. “Sadly it has come to our attention that Neil Fingleton Britain’s Tallest man passed away on Saturday...Our thoughts and condolences go out to his family,” the post read.

Fingleton, born in Durham in 1980, played basketball in the United States till 2007 when he quit because of an injury. Besides Game of Thrones, Fingleton has also starred in X-Men: First Class and Avengers: Age of Ultron.

In 2007, the Guinness World Records recognised him as the tallest man in the UK. “I have always been taller than everyone since I can remember,” he had said, reported AP.