Lee Valley White Water Centre was officially opened by the only daughter of what Queen?
Lee Valley White Water Centre: Lee Valley White Water Centre (previously known as Broxbourne White Water Canoe Centre) is a white-water slalom centre, that was constructed to host the canoe slalom events of the London 2012 Olympic Games. Lee Valley White Water Centre:  On 9 December 2010, Anne, Princess Royal officially opened the venue which is owned and managed by Lee Valley Regional Park Authority. Anne, Princess Royal: Anne, Princess Royal, {'1': ", '2': ", '3': ", '4': "} (Anne Elizabeth Alice Louise; born 15 August 1950) is the second child and only daughter of Queen Elizabeth II and Prince Philip, Duke of Edinburgh.
Queen Elizabeth II