The Queen is to remain in Scotland to receive Prime Minister Boris Johnson and his replacement, Buckingham Palace has said.
The 96-year-old monarch, who has faced ongoing mobility issues, traditionally holds audiences with outgoing and incoming premiers at Buckingham Palace.
The Queen is on her traditional summer break in the Scottish Highlands.
A Palace spokesman confirmed the decision on Wednesday.
It is understood the decision was taken at this stage in order to provide certainty for the Prime Minister’s diary.
The Sun reported at the weekend that the Prince of Wales has been making regular morning visits to see his mother as she continues to struggle with her mobility, with the unplanned visits considered highly unusual.
Buckingham Palace declined to give an ongoing commentary on the monarch’s health.
She spends most of her time at Windsor Castle, 22 miles from central London, living there during the pandemic and while major renovations take place at Buckingham Palace, and for her comfort.
As head of state, it is the Queen’s duty to appoint the prime minister who leads Her Majesty’s Government.
The Royal Encyclopedia states that the appointment of a prime minister is “one of the few remaining personal prerogatives of the sovereign”.
The monarch does not act on advice nor need to consult anyone before calling upon the leader with an overall majority of seats in the House of Commons to form a government.