The essential
Doctors to Queen Elizabeth II - currently at her Scottish residence in Balmoral - expressed concern about her condition on Thursday.
Prince Charles and his wife, Camilla, visited the Queen this morning.
Prince William is on his way.
In recent months, the health of the 96-year-old sovereign had raised some concerns, in particular due to the cancellation of several events.
On Tuesday, she met former prime minister Boris Johnson and his replacement, Liz Truss.
14:17
The Queen's family arrives
According to the Press Association agency, the family of Elizabeth II has been informed of her state of health.
According to the BBC, her son, Prince Charles, is already at her bedside.
His grandson, William, is on his way to Balmoral, Scotland.
14:16
Doctors "concerned"
In an official statement, Buckingham Palace says doctors for Queen Elizabeth II, 96, are 'concerned' about her condition and 'have recommended that she be placed under medical supervision' at her Balmoral Castle in Scotland.
14:15
Hi there
Welcome to this direct dedicated to Queen Elizabeth II, whose health officially worries her doctors, according to a press release from Buckingham on Thursday.