Jacob's Island

From the longer Wikipedia page

Jacob's Island was a notorious rookery in Bermondsey, on the south bank of the River Thames in London. It was separated from Shad Thames to the west by St Saviour's Dock, the point where the subterranean River Neckinger enters the Thames, and on the other two sides by tidal ditches, one just west of George Row and the other just north of London Street (now named Wolseley Street).

Jacob's Island was immortalised by Charles Dickens's novel Oliver Twist, in which the principal villain Bill Sikes dies in the mud of 'Folly Ditch'