Mandatory Credit: Photo by Ray Tang/REX Shutterstock (4900412y) Sophie Countess of Wessex, Prince Edward, Prince William, Queen Elizabeth II, Prince Philip, Prince Andrew, Duke of Kent, Prince Michael of Kent, Duchess of Gloucester and Duke of Gloucesterwatch the flyover on the balcony at Buckingham Palace 75th Anniversary of the Battle of Britain, London - 10 Jul 2015