Zara Tindall joins with Harry and Meghan Markle's close friends for 'passion' project
She has also been seen championing retired racehorses
Zara Tindall
Zara confirms attendance at Kate event as Beatrice and Eugenie's presence hangs in the balance
Mike Tindall and his wife will also join the King and Queen at Sandringham
Zara Tindall makes feelings clear on Brexit as royal says horse welfare has 'gone downhill'
The King's niece said travel time with horses abroad has increased since Brexit
