For those of you who somehow do not know, a lido is a public open-air swimming pool or bathing beach. Considering that none of the potential beaches along the Thames are commonly used for any sort of sunbathing anymore, with regards to the urban context of London, a lido commonly denotes a public open-air swimming pool.  An essential aspect of the lido is that they are for pubic use, they are not private members clubs, anyone can rock up on the day and have a swim. Over the course of the 20th century, South London has had 21 lidos, now there are only four. We will discuss those former lidos in a future article, and what potential futures those lidos have, but today we are going to discuss the four stunning lidos of South London that are still going. and are still open to the public.