Tucked away along a shady path towards the north-east edge of Hampstead Heath is a sign: Women Only. This is the Kenwood Ladies' Bathing Pond.Floating in the Pond's silky waters, hidden by a canopy of trees, it's easy to forget that you are in the middle of London. On a hot day, thousands of swimmers from eight to eighty-plus can be found waiting to take a dip before sunbathing in the adjoining meadow. As summer turns to autumn and then winter, the Pond is still visited by a large ...