English: River Westbourne, Sloane Square tube station The construction of the Sloane Square tube station was complicated by the crossing of the site by the River Westbourne which ran through Hyde Park as the Serpentine Lake, and was originally crossed by the Knight's Bridge at Knightsbridge. The River was carried above the platform in a large iron pipe suspended from girders which remains in place today. Although the station was badly bombed during the Battle of Britain in November 1940, the old iron pipe was not damaged. The river falls into the river Thames about 300 yards west of Chelsea Bridge. This outfall, from a pipe now called the Ranelagh Sewer, can still be seen at low tide.