1 Blithfield Reservoir
in South Staffordshire has 21 species of waterfowl using the site in winter. A Site of Special Scientific Interest, some parts are only accessible with a permit from the West Midland Bird Club.
2 Rutland Water
is owned by Anglian Water, but a large swathe is managed by the Leicestershire and Rutland Wildlife Trust. It has hosted counts of as many as 30,000 wildfowl in winter.
3 Abberton Reservoir
is managed by Essex and Suffolk Water. With waterfowl counts regularly up to 40,000 during winter, it is recognised as a reserve of international importance.
4 London Wetland Centre
is managed by the Wildfowl and Wetlands Trust and was converted into a showpiece urban reserve from four disused Victorian reservoirs in the borough of Richmond upon Thames.
5 Chew Valley Lake
is just south of Bristol and managed by Bristol Water. Opened in 1956, the reservoir contains an internationally important number of overwintering shovelers and gadwalls.