Queen Elizabeth II cancels Sandringham Christmas
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The decision comes as Britain is gripped by rising numbers of cases of the Omicron variant of the coronavirus, and the possible introduction of new restrictions.
Britain's domestic Press Association news agency quoted an unnamed royal source as saying the decision "was a personal one taken after careful consideration".
The 95-year-old monarch will see family at the historic castle west of London over Christmas and "sensible precautions and all appropriate guidelines will be followed", it added.
The Queen has been forced to limit her official duties after an overnight hospital stay in October that prompted medics to advise her to rest.
Last week, she cancelled her traditional pre-Christmas family lunch for the second year in succession because of the risks of the spread of the virus.
Last year, strict rules on household mixing indoors and social distancing were in place, preventing her children, grandchildren and great-grandchildren as well as cousins from meeting.
This Christmas is the monarch's first since the death in April of her husband of 73 years, Prince Philip, Duke of Edinburgh.
Britain's Prime Minister Boris Johnson on Monday resisted calls from scientists to impose tougher restrictions on social mixing before the festive season this weekend.
Johnson, however, has said the government was keeping the situation "under constant review", as the number of positive tests nudged towards a record 100,000 a day, with a growing number from the Omicron mutation.