Down at the Serpentine Swimming Club one January morning, as the last handful of bright pink bodies struggled back into their thermals and began the post-swim ritual of uncontrollable shivering, a chap named Roger made a memorable observation: “Once you’ve s‑s-swum the winter season at the S‑s-serpentine, you’re s‑s-suddenly immensely liberated! B‑b-because you know that […]