Peter Phillips and Harriet Sperling mark their relationship anniversary as the couple return to the Badminton Horse Trials

One year after confirming their romance at Badminton, Peter Phillips and Harriet Sperling have returned to the Horse Trials for another loved-up afternoon in Gloucestershire. Peter, the son of Princess Anne, was celebrating his sister, Zara Tindall, who was awarded the prestigious Armada Dish for…