Oscar-nominated actress Janet McTeer has been selected to star opposite Brendan Gleeson in Churchill at War, HBO Films/BBC Films' follow-up to The Gathering Storm, their much-heralded biopic of Winston Churchill.

According to The Hollywood Reporter, Churchill at War, from Scott Free Prods. and Rainmark Films, picks up where The Gathering Storm left off and explores how the traits that made Churchill (Gleeson) a great wartime leader during World War II were the same ones that resulted in his ouster within weeks of the war's end. Like The Gathering Storm, Churchill at War will provide an intimate look into Churchill's marriage with wife Clemmie (McTeer). In The Gathering Storm, the role of Clemmie Churchill was played by Vanessa Redgrave.

Thaddeus O'Sullivan is directing Churchill at War from a script by Hugh Whitemore.

Ridley Scott, Tony Scott and Julie Payne executive produce.