What we're covering
- The Queen's doctors are concerned for the health of the British monarch and recommend she remains under medical supervision, Buckingham Palace said in a statement.
- Her son Prince Charles, her grandson Prince William and other British royal family members have traveled to Balmoral Castle in Scotland to be by the 96-year-old monarch's side.
- "The whole country will be deeply concerned by the news from Buckingham Palace," said new British Prime Minister Liz Truss, who met with the Queen on Tuesday.
Catherine, Duchess of Cambridge, will remain in Windsor with her children, Kensington Palace says
From CNN's Max Foster in London
Catherine, the Duchess of Cambridge, has remained in Windsor as her children Prince George, Princess Charlotte, and Prince Louis are on their first full day at their new school, Kensington Palace said in a statement.
Her husband, Prince William, the Duke of Cambridge, is traveling to the Balmoral Castle in Scotland to be with the Queen, Kensington Palace said earlier on Thursday.
Prince Harry and Meghan are on their way to Scotland, spokesperson says
Prince Harry is also traveling to Balmoral Castle in Scotland after being notified about the concerns around his grandmother's health, a spokesperson for the Prince told CNN.
He is en route to Balmoral along with Meghan, the Duchess of Sussex.
The Queen’s other children are traveling to or have already arrived at Balmoral Castle, source says
The Queen's other children — Prince Edward and Princess Anne — are traveling to Balmoral Castle in Scotland or have already arrived, a royal source told CNN on Thursday.
The Earl and Countess of Wessex are traveling to Balmoral.
The Princess Royal is already at Balmoral, having been undertaking engagements in Scotland this week, the Royal source said.
Prince Andrew, the Duke of York, is also traveling to Balmoral, a source close to the Prince told CNN.
The Queen had postponed an important meeting on Wednesday after her doctors advised her to rest
From CNN's Max Foster in London
Queen Elizabeth II had postponed a meeting of her Privy Council which was due to take place on Wednesday after being advised by doctors to rest, Buckingham Palace said yesterday.
A royal source said the meeting was virtual and the Queen hadn’t been to the hospital.
The Privy Council is the formal body which advises the Queen on the exercises of the Royal Prerogative.
During the meeting, new UK Prime Minister Liz Truss would have taken her oath and new cabinet ministers would have been sworn into their roles.