A World War II auxiliary pumping station located at the end of an L-shaped breakwater in Charlton, London. During the war, it played a crucial role in ensuring that the city's main infrastructure could continue to operate and maintain the stability of the water supply system in the event of enemy attacks. It was part of a series of defensive measures built at that time to cope with possible air raids and destruction. Usually built relatively discreetly to reduce the risk of being discovered and destroyed by the enemy during war. It had strategic significance and was an important component of the British civilian defense system at that time. They have significant value as historical relics.