The veteran actor will team up with Lyndsay Duncan for the TV adaptation of Jonathan Smith's book The Churchill Secret: KBO, which chronicled the wartime Prime Minister's recovery from a stroke while he was still in office in the early-to-mid-1950s.

Duncan will play Churchill's wife Clementine in the movie.

Gambon joins a long list of top stars who have portrayed Churchill onscreen, including Simon Ward, Robert Hardy, Bob Hoskins, Albert Finney, and Timothy Spall, who played the former Prime Minister in 2010's The King's Speech.