The Aquarius Golf club was founded in 1912. The 9 hole course was laid out on the roof and around Beechcroft Reservoir, which was completed in 1909. At the time it was Europe's largest under ground reservoir, still operational today and holding 55 million gallons of water. Competitions have been played at the Aquarius since 1913, with breaks for both World Wars. In 1920, two schoolboys from Alleyn's School, Dulwich, started golf at the Aquarius. They were L.T (Leslie) Cotton and his brother T.H. (Henry) Cotton. In 1923 Henry Cotton won the Pilling Cup and the Hutchings Trophy & Leslie won the Bogey Cup. They left in January 1924 to become professionals.