Royal doctors sent the monarch to be seen by specialists in London on Wednesday afternoon after she was forced to cancel a royal tour. It is believed the medical team acted out of caution to have her admitted on Wednesday.
Writing in The Times, Royal expert Roya Nikkah quoted palace sources as saying the Queen’s life has been busy with “a constant flow of lunches and dinners with family and friends, because the Queen does not want to dine alone.”
In recent times the monarch has reportedly spent some late nights up including last month watching Emma Raducanu win the US open and after 11pm and hailed her “remarkable achievement.”
A source close to the Queen said: “She is fine, but she needs the rest — she is saving her energy for Cop [Cop26].”
In an official statement, Buckingham Palace has said the Queen “remains in good spirits”.
However, according to the Times a source close to the Queen, said: “She is knackered.”
The monarch was back at her desk on Thursday after spending the night in hospital on Wednesday evening.
The Queen was determined the message from Windsor should be “business as usual.”
Despite fears the monarch might miss the upcoming COP26 summit in Glasgow next month, experts believe she is still expected to attend.
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Looking at the archives, Mr Vickers said that even in 1977, comments were being made about not overdoing royal duties.
He spoke on remarks made by Sir Martin Charteris, the Queen’s former private secretary.
According to Vickers, Mr Charteris said: “‘You must not bore the public and you must not kill the Queen.’ Basically, don’t overdo it, and that was back then.”