The Queen will briefly return to public duties on Tuesday but her schedule this week has been cut short as she continues her recovery from a chest infection.
Camilla, 77, fell ill after returning from a trip to Australia and Samoa with the King.
She pulled out of her engagements last week on doctors’ advice and did not attend the Festival of Remembrance at the Royal Albert Hall on Saturday or the Remembrance Sunday service at the Cenotaph.
• What are the risks of a chest infection at the Queen’s age?
The Queen had been resting at her Wiltshire home of Ray Mill but was travelling to London on Tuesday morning to host a reception linked to the Booker Prize.
Given her ongoing recovery,