The Princess Royal has "sustained minor injuries and concussion" after an incident at her Gloucestershire home, Gatcombe Park, on Sunday evening, Buckingham Palace has confirmed.
In a statement, the palace has said that Princess Anne, 73 "remains in Southmead Hospital, Bristol, as a precautionary measure for observation and is expected to make a full and swift recovery".
It added: "The King has been kept closely informed and joins the whole Royal Family in sending his fondest love and well-wishes to The Princess for a speedy recovery."
HELLO! understands that Anne was out walking within her estate when the incident occurred, resulting in the Princess Royal sustaining minor wounds to the head.
While the exact cause of her injuries has not been confirmed, it's understood that her medical team say that her head injuries are consistent with a potential impact from a horse's head or legs.
Emergency services were sent to Anne's home and after medical care at the scene, Anne was transferred to Southmead Hospital in Bristol for appropriate tests, treatment and observation.
© GettyIt's understood that Anne's husband, Vice Admiral Sir Tim Laurence, and her children, Peter Phillips and Zara Tindall were on the estate at the time of the incident. Sir Tim accompanied his wife as she was taken to hospital.
While the Princess has suffered concussion and minor injuries to the head, she is expected to make a full and swift recovery. No further details have been given about her treatment.
© GettyA palace spokesperson says Her Royal Highness is "recovering well, is in a comfortable condition and is being kept in hospital as a precautionary measure for further observation".
Future engagements
The Princess Royal keeps a busy schedule of engagements but a palace spokesperson has said: "On doctors’ advice, Her Royal Highness’s engagements for the week ahead will be postponed. Her Royal Highness sends her apologies to any who may be inconvenienced or disappointed as a result."
© GettyShe will be unable to attend the Japan State Banquet at Buckingham Palace on Tuesday evening and will no longer travel to Canada later this week for a planned visit.
Equestrian career
The Princess Royal is an accomplished and confident horsewoman, having been the first British to compete in the Olympics, when she rode the late Queen's horse, Goodwill, in the equestrian three-day event at the 1976 Montreal Olympic Games.
Anne also won a gold medal in 1971 and two silver medals in 1975 at the European Eventing Championships.
© GettyHer daughter Zara has followed in her mother's footsteps with her own equestrian career and won a silver medal as part of Team GB's eventing team at the London 2012 Olympics.
Anne also rides on horseback during the King's birthday parade, but appeared to have some difficulties with an unruly horse at Trooping the Colour earlier this month.
© GettyWith her being an experienced and skilled horsewoman, Anne was able to keep her horse under control without drawing too much attention away from the rest of the parade...
A difficult year for the royal family
Princess Anne's accident is the latest health upset to the hit the royal family this year, with both the King and the Princess of Wales diagnosed with and undergoing treatment for cancer, and Sarah, Duchess of York, having skin cancer.
© GettyAnne is a key member of the King's slimmed-down working monarchy, and has played an important role as she stepped up in support of Charles amid his condition.
The princess, often dubbed the hardest-working royal, is known for her no-nonsense approach and her commitment to royal duty.
