Prime Minister David Cameron watches as British Number 3 female Johanna Konta plays with children at the LTA's #TennisIS event in the grounds of the Houses of Parliament on June 19, 2013 in London, England. The event is part of a programme of activity to promote tennis as a sport for all ages and abilities, at a time when it takes centre stage for the British public on the eve of The Championships, Wimbledon.