Buckingham Palace says the Queen is "comfortable" but under "medical supervision" after her doctors expressed concern for her health.
The 96 year-old monarch is now being surrounded by members of the Royal Family at the Balmoral estate in Scotland.
Prince Charles and the Queen's other children, as well as Prince William and Prince Harry are gathering in Aberdeenshire.
And people at Buckingham Palace, concerned about the Queen's health, have been laying flowers in front of the building.
Peter Hunt is a former Royal Correspondent for the BBC.
IN: "Yesterday, very strikingly…."
OUT: "….for her health"
DUR: 22 seconds
http://www.fsnradionews.com/feeds/0908queen-hunt1.mp3
(ALT)
Peter Hunt is a former Royal Correspondent for the BBC.
IN: "We've not had…."
OUT: "…made their first statement"
DUR: 38 seconds
http://www.fsnradionews.com/feeds/0908queen-hunt2.mp3
(MORE)
Among those expressing concern for the Queen's health, US President Joe Biden.
His press secretary Karine Jean Pierre spoke at the White House.
IN: "The President...."
OUT: "....of the United Kingdom"
DUR: 27 seconds