the bbc news at six. princess anne is in hospital with concussion after apparently being injured by a horse. the incident happened on her estate in gloucestershire yesterday. buckingham palace says the princess, who s 73, is expected to make a full recovery, though is likely to remain in hospital for some days. here s our senior royal correspondent, daniela relph. just over a week ago, trooping the colour. the princess royal was on horse back where she loved to be. an accomplished horsewoman, she played a leading part in the event. but last night, princess anne was injured on her estate, gatcombe park, in gloucestershire. it is understood she was hurt after coming into contact with a horse s head or legs while on a walk. in a statement, buckingham palace said. year on year, princess anne tops the list of royals who carry out the most public engagements. her work is often under the radar, without the glamour and attention others receive. but in a year when the royal family has