“The fact the Princess Royal was detained in hospital overnight indicates that it’s not a minor matter,” Cole told Metro.

“It’s no small thing to have a concussion at any age, but at the age of 73, it could be serious.”

Anne was walking on her Gloucestershire estate on Sunday when she was kicked by a horse.

Emergency services were quickly despatched to the estate and, having received medical care, Princess Anne was transferred to hospital in Bristol.

It’s said that the princess, sister to King Charles, will miss several scheduled engagements this week, including a state banquet to mark the planned Japanese state visit, as well a trip to Canada.

Here’s to wishing Princess Anne a swift recovery! We hope things aren’t worse than the Palace are letting on.