I recently visited Kentish Town Sports Centre in North London to swim in what were originally known as The Prince of Wales Baths built just at the turn of the century (app. 1901). The baths share a similar history to other Edwardian era sites such as Moseley Road Baths and Bramley Baths in that they were built as wash houses for a local population that had no access to running water. There are numerous articles detailing the rich history including by the local Kentish Towner: https://www.kentishtowner.co.uk/2012/04/04/wednesday-picture-prince-of-wales-baths-kentish-town-sports-centre-if-you-must/

That these baths were saved and then refurbished in what is now the Kentish Town Sports Centre was almost a miracle. However, small and beautiful wins pale in comparison with the rather bleak picture of lost pools across the UK where the Guardian claims almost 400 pools have been lost since 2010: https://www.theguardian.com/society/2023/mar/12/england-has-lost-almost-400-swimming-pools-since-2010

For now though, anyone passing through or living in the London area has a good selection of lidos and indoor pools. While the price for a day pass for someone living outside the area was pricey, it is a beautiful building and fellow swimmers were friendly. The Guardian also covered the restoration of the pool in an article from 2010 and it was encouraging to see that the place was still going strong: https://www.theguardian.com/culture/2010/jul/26/kentish-town-baths-restored-open