OMEGA has announced that heptathlete Jessica Ennis has joined its family of brand ambassadors. The 25-year-old British sports star is one of the dominant athletes of her generation having won the World and European Championships in the heptathlon as well as a World Indoor Championship in pentathlon. She will make her first appearance on behalf of the brand when the OMEGA Countdown Clock is unveiled in Trafalgar Square on 14th March. The date will mark 500 days to go before the start of the Games.