Clapham South is one of eight London Underground stations with a deep-level air-raid shelter underneath it. It was the first to be developed by Holden for the Morden extension and has features which are typical of the stations on this stretch – low level concourse, white wall tiling with black and green trim, and a concrete paved floor feature.
The station was originally to have been called ‘Nightingale Lane’ and this name still exists hidden behind the blue bars on the platform roundels