The BBC film, Margaret, is "an intimate portrayal of a woman on the brink of ruin", according to its makers, who liken the story to a Shakespearean tragedy.

Lady Thatcher is shown fighting for her political life as Cabinet colleagues plot her downfall, leading to her resignation as Prime Minister in 1990.

The drama "intimately explores the strengths and tragic flaws of Margaret Thatcher's character that led to her closest political allies turning on her" and promises to reveal a hitherto unseen side of the former Prime Minister. It will be screened on BBC2 this winter...