The best outdoor pools and lidos for a summer swim in the UK

With hot weather on the way, why not cool off in one of these pools or lidos?
Picture: John DevlinPicture: John Devlin
Picture: John Devlin

From seaside swimming in Gourock to a brine pool in Cheshire, these are the best lidos and pools to cool down in this summer whether you're at home or on enjoying a getaway.