Britain's Queen Elizabeth II has pulled out of hosting a major reception for world leaders at the COP26 climate change summit, Buckingham Palace said on Tuesday.
The 95-year-old monarch was due to travel to Scotland for the high-profile UN conference on Monday 1 November.
A Palace spokesman said: "Following advice to rest, The queen has been undertaking light duties at Windsor Castle."
"Her majesty is disappointed not to attend the reception but will deliver an address to the assembled delegates via a recorded video message."
The queen underwent preliminary tests in hospital on 20 October during her first overnight stay at a medical facility in eight years.
She has been resting following medical advice to cancel her planned two-day trip to Northern Ireland last week.
But she returned to work on Tuesday, carrying out virtual audiences from Windsor Castle - her first official engagements in seven days since she was ordered to rest by doctors.