Queen Elizabeth has been moved to the Balmoral and is currently receiving strict medical supervision following “concerns” about her health, Buckingham Palace said in a statement on Thursday.

“Following further evaluation this morning, The Queen’s doctors are concerned for Her Majesty’s health and have recommended she remain under medical supervision,” the statement said. “The Queen remains comfortable and at Balmoral.”

Clarence House confirmed to The Telegraph that the Prince of Wales, Prince Charles, had landed at Balmoral via helicopter, and Kensington Palace said the Duke of Cambridge, Prince William, was “travelling to Balmoral”.  

Britain’s Prime Minister Liz Truss, who met the Queen on Monday to be appointed, said the entire nation would be concerned by the news from Buckingham Palace.

“My thoughts – and the thoughts of people across our United Kingdom – are with Her Majesty The Queen and her family at this time,” Ms Truss said. 

On Wednesday, the Queen postponed a virtual Privy Council meeting after being advised by doctors to rest. During the gathering, Ms Truss would have taken her oath, and new cabinet ministers would have been sworn into their roles.

This week, the Queen accepted the resignation of former Prime Minister Boris Johnson and appointed Ms Truss as the new Prime Minister.  

Ahead of Ms Truss’ appointment, Buckingham Palace had announced that the Queen would not be making the trip from Scotland in case the Queen experiences any episodic mobility issues.

In May, the Queen missed the State Opening of Parliament for the first time in 59 years. The palace cited the monarch’s “episodic mobility problems”.

The Queen has decreased her number of obligations to focus on core constitutional duties as the head of the Church of England and the Head of State, attending events such as the opening of parliaments and audiences with the Prime Minister and new ambassadors to the UK. She began using a walking stick in public last year.