Syon Park is the 56.6 hectare garden of Syon House, the London home of the Duke of Northumberland in Isleworth in the London Borough of Hounslow. It was landscaped by Capability Brown in the 18th century, and it is Grade I listed by English Heritage under the Historic Buildings and Ancient Monuments Act 1953 for its special historic interest. The 56.6 hectare main gardens are a Site of Borough Importance for Nature Conservation, Grade I, and the flood meadows next to the River Thames are a biological Site of Special Scientific Interest (SSSI) and a Site of Metropolitan Importance for Nature Conservation.
The Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust (BBOWT), is a wildlife trust covering the counties of Berkshire, Buckinghamshire and Oxfordshire in England.
Hampshire and Isle of Wight Wildlife Trust is a Wildlife Trust with 27,000 members across the counties of Hampshire and the Isle of Wight, England.
Blackwater Valley is a 33.9-hectare (84-acre) biological Site of Special Scientific Interest between Sandhurst in Berkshire and Blackwater in Hampshire.
Bray Pennyroyal Field is a 3.5-hectare (8.6-acre) biological Site of Special Scientific Interest between Windsor and Maidenhead in Berkshire.
Acaster South Ings is a Site of Special Scientific Interest, or SSSI, near York, England. It consists of two alluvial flood-meadows, and was designated in 1988 because it supports diverse fauna and flora, some of which is rare in the Vale of York area. One of the rarities is the tansy beetle, which feeds on the leaves of the tansy plant.
Frays Farm Meadows is a 28.2-hectare (70-acre) biological Site of Special Scientific Interest near Denham in the London Borough of Hillingdon. It was notified as an SSSI in 1981, and has been managed by the London Wildlife Trust on behalf of Hillingdon Council since 1999. It is part of the Colne Valley Regional Park.
Roding Valley Meadows is an 18.9 hectare biological Site of Special Scientific Interest in Buckhurst Hill in Essex. It is part of a 65.2 hectare Local Nature Reserve with the same name, which is owned by Epping Forest District Council and Grange Farm Trust, and managed by the Essex Wildlife Trust.
Frogmore Meadows is a 4.6 hectare biological Site of Special Scientific Interest in Hertfordshire and Buckinghamshire, north of the village of Chenies. It consists of two meadows in the Chilterns Area of Outstanding Natural Beauty, next to the River Chess, one of which is a Hertfordshire and Middlesex Wildlife Trust nature reserve. The planning authorities are Three Rivers District Council, Dacorum Borough Council and Chiltern District Council.
Barrow Gravel Pits is a 35.6 hectares biological Site of Special Scientific Interest in Barrow upon Soar in Leicestershire.
Limpenhoe Meadows is a 12-hectare (30-acre) biological Site of Special Scientific Interest west of Reedham in Norfolk. It is part of the Broadland Ramsar site and Special Protection Area, and The Broads Special Area of Conservation.
Poplar Farm Meadows, Langley is a 7.5-hectare (19-acre) biological Site of Special Scientific Interest east of Loddon in Norfolk. It is part of the Broadland Ramsar site and Special Protection Area, and The Broads Special Area of Conservation.
New Marston Meadows is a 44.7-hectare (110-acre) biological Site of Special Scientific Interest in Oxford in Oxfordshire.
