Dulwich College

Dulwich College is a boarding school for boys aged 718 in Dulwich in south London. It is one of the largest fee-paying schools in England. It was started in 1619 by Edward Alleyn. In 2013 88% of students got 100% A*/A in their A Levels. It is a member of the Eton Group.
Amongst the many famous pupils was Joseph Bazalgette, who cleaned the London water supply, and was knighted in 1875.