From seaside swimming in Gourock to a brine pool in Cheshire, these are the best lidos and pools to cool down in this summer.
5. Ilkley Lido,West Yorkshire
This lido, built in 1935, is unheated meaning it can be anything between 14 and 24 degrees - perfect for cooling down, or waking up.
6. Lazonby Swimming Pool & Campsite, Cumbria
Run by volunteers, this 17m long pool opened in 1964.
7. Droitwich Spa Lido, Worcester
Droitwich Spa Lido - a 40m open-air saltwater swimming pool - was reopened in 2007 after closing in the 90s.
Photo: Geograph/P L Chadwick