David Seidler, best known for winning an Oscar for the screenplay of the film "The King's Speech," has passed away at the age of 86, BBC reported on Monday.

The London-born screenwriter brought to the big screen the true story of how British King George VI overcame his speech impediment.

Seidler, who himself stuttered, dedicated his Oscar in 2011 "to all the stutterers around the world." The film "The King's Speech" won four Oscars that year, and one went to actor Colin Firth, who portrayed the king.

In February 2011, Seidler won two BAFTA awards, and later that same year in September, he received the Humanitas Prize for his work.

"I was writing about myself," Seidler said in an interview with the BBC that year.

Seidler's manager Jeff Aghassi confirmed to the BBC that the screenwriter passed away on Saturday.

"David was in the place he loved most in the world, New Zealand, doing what gave him the greatest peace, which is fly-fishing," Aghassi said.

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