This is a story of one family’s abiding passion. It’s a real love affair. The family in question just happens to be the Royal Family and the objects of their desire are their beloved horses. This is an opportunity like no other as we get to see the nation’s first family at work and at play in their own back garden during Royal Windsor Horse Show week. Join Alan Titchmarsh as he is given an exclusive view of the show by none other than His Royal Highness, the Duke of Edinburgh.