Margaret Thatcher was the first woman to become Prime Minister in 1979, went on to make further history with three consecutive terms in Downing Street, and quickly won herself the title of The Iron Lady for her uncompromising style.
Baroness Thatcher has died, aged 87. Her son, Sir Mark, and daughter Carol announced that their mother had passed away "with great sadness" after suffering a stroke.
She will be remembered for being one of the most influential political figures of the 20th century, for her tough action against Argentina over the Falkland Islands, her part in ending the Cold War, and for her famous phrase "The Lady's not for turning".
We take a look back at Lady Thatcher's life in pictures and her rise to becoming Britain's first and only female prime minister – and the longest-serving of the 20th century...