The Directory

Wild Swimming Reservoirs

Reservoirs that let you in, on a ticket. Marked courses, a sailing-club desk, and a ban on the rest of the bank.

All Lake Quarry Reservoir River Spring-Fed Lake Lido
Pitsford Water Verified

Pitsford Open Water Swimming (SwimCube) Wild Swimming

Reservoir £7 / 1-hour session; intro course £20; wetsuit hire £5
Netherton Reservoir Verified

Netherton Reservoir Wild Swimming

Reservoir £7.50 / swim (kscan); winter £8.75; child £5.50; guest £10. NOWCA £20/year (2026).
West Reservoir Centre, Hackney: filter house across the water with the City skyline Verified

West Reservoir Centre Wild Swimming

Reservoir PAYG via Better (1-hour slot)
Llandegfedd Lake Verified

Llandegfedd Lake Wild Swimming

Reservoir 10-session class pass £75 (~£10 / session)
Lisvane and Llanishen Reservoirs, Cardiff, both full, visitor centre on the far bank Verified

Lisvane & Llanishen Reservoirs Wild Swimming

Reservoir ~£10 / 90 min