Queen Elizabeth II, the UK’s longest-serving monarch, has died at Balmoral aged 96.
Her family had gathered at her Scottish estate after concerns grew about her health earlier on Thursday.
Her reign lasted 70 years.
In a statement, Buckingham Palace said: “The Queen died peacefully at Balmoral this afternoon. The King and the Queen Consort will remain at Balmoral this evening and will return to London tomorrow.”
All the Queen’s children travelled to Balmoral, near Aberdeen, after doctors placed the Queen under medical supervision.
The Queen came to the throne in 1952 and witnessed enormous social change.
With her death, her eldest son Charles, the former Prince of Wales, will lead the country in mourning as the new King and head of state for 14 Commonwealth realms.
Her reign spanned 15 prime ministers starting with Winston Churchill, born in 1874, and including Liz Truss, born 101 years later in 1975, and appointed by the Queen earlier this week.
At Buckingham Palace in London, crowds awaiting updates on the Queen’s condition began crying as they heard of her death.
The BBC’s usually bright red intro graphic turned black after the death of the queen was announced.
(Picture Courtesy: Reuters)