Away with the wholesome brightness of Sir Frank’s original conception, and in with a suggestive gloom, blond pools of light contrasting with surrounding shadow. Small, weak spots let into the ceiling now give vestigial illumination, like that in cinemas, over the surrounding walkway, and throw the figures loitering or recovering at either end into silhouette, making them look black. Blacks themselves become almost invisible in the bath, the navy blue tiles, once cheery, now making it impossible to see, even with goggles, for more than a few feet under water. The luminous whiteness of the traditional swimming-pool is perversely avoided here: the swimmers loom up and down unaware of each other, crossing sometimes in the soft cones of brightness.

All this makes the pool seem remote from the rest of the world, but the impression is lessened by the P A system which interrupts its continuous relay of music-insipid pop on weekdays, classical on Sundays-to call members to the phone or to reception. It is the camp voice of Michael that one normally hears, wringing the wildest insinuations out of words such as guest and occupant. Those who know his ways greet each announcement with a delight unshared by the novice; in my first week at the club the disdainful announcement that ‘Mr Beckwith has a man in reception’ had brought a round of silly laughter as I walked, blushing, from the gym.

And the pool is a busy place. Except for certain mournful periods-early afternoons, Sunday evenings-there is a crowd: friends are racing, practised divers arch into the water making barely a splash, the agile avoid the slow, groups sit in a dripping line on the edge, feet flicking the water, cocks shrunken by the cold sticking up comically in their trunks. Miles of serious swimming are wound up in those twenty-five yards each day, and though some dally between lengths, of most you see only the heave of breaststrokers’ backs, the misted goggles and gasping, half-averted mouths of crawlers, the incessant cleaving movements of their arms, and the bubbling wakes of their feet.