Colin Firth agreed to return as stammering monarch George VI for a sequel to The King’s Speech – the role that earned him a stack of trinkets including a Best Actor Oscar, The Sun reported.

Stars of the original — Helena Bonham Carter, who played George’s wife Queen Elizabeth, and Geoffrey Rush, who was the king’s speech therapist — have also said they are desperate to return, along with director Tom Hooper.

A movie source said the sequel will be set during the carnage of World War Two’s Blitz.

The insider said: “The sequel is going to be about the experience of families during the Blitz. It will focus on how the privileged Royal Family was hit by the crisis, compared to the more ordinary family of George VI’s speech therapist.

“The focus will be on George but it will also show how the whole royal household was affected. There’s still amazing interest in the Blitz. The movie is still in the very early stages but everyone’s keen to get going soon.”

The film won 3 other Oscars — for Best Picture, Best Screenplay and Best Director — and there were best supporting actor nominations for Rush and Bonham Carter.