Tooting Bec Lido

This is the undisputed daddy of all London lidos, both in terms of size - at 91.5m, it's the second biggest outdoor freshwater pool in Europe - and reputation. As one of the London Pools Campaign assessors put it: 'Best thing: everything. Worst thing: nothing'. The lido's regulars love its vastness and the chance to swim endless lengths without jostling or interruption; families with young children, meanwhile, appreciate the paddling pool. And everyone adores the vibrant changing cubicle doors along the sides of the pool. The South London Swimming Club (www.slsc.org.uk) has been based here since 1908.