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Queen Elizabeth II has abandoned plans to make her customary train trip to her country home 100 miles north of London, where she usually spends Christmas day, prompting speculation over the 90-year-old monarch’s health.

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Are Harry and Meghan in trouble for urging Americans to vote? The Queen spent Tuesday at her traditional Buckingham Palace Christmas lunch party for members of her family who don’t come to Sandringham, her country home, on Christmas day. She was said to be in fine spirits, according to the Daily Beast, as she welcomed about 50 guests, including Prince George and Princess Charlotte, who are spending Christmas with their maternal grandparents, the Middletons, this year.

But palace officials reportedly told reporters Wednesday there are no “grave concerns” over the 90-year-old Queen’s health, nor the health of 95-year-old Prince Philip. But with just 30 minutes notice, they changed plans for their annual trail ride, on the 10:44 to King’s Lynn, a town close to Sandringham.

The palace released a statement, saying “The Queen and The Duke of Edinburgh have heavy colds, and so have decided not to travel to Sandringham today.”

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Photographers waiting to meet the queen and her husband at the railway station were told, “It’s not happening now,” just a half hour before the train departed.

As the Daily Beast points out, the queen and her husband maintain very busy schedules, despite their advanced age. Philip had a heart attack in 2011. Sources say the couple still plans to go to Sandringham before Christmas Day.