F.J. Smith. The entrance was to one side, and features lovely panels of sculptured swimmers by Henry Poole, then just 18 years old.
Despite the fact that the facade has separate entrances for men and women, the swimmers are all men - perhaps it was felt that naked men and women should not mix even in allegorical carving. But surely it would have been OK to mix the sexes because they are clearly Classical Greeks and so any impropriety would have the sanction of antiquity.
The central panel has swimmers demonstrating the breast stroke and the front crawl against a glorious sunrise (it must be a sunrise: a sunset would have been decadent).
The baths themselves were demolished in the 1990s to make way for the Westminster Archives Centre.