Reigate Heath is a 61.7-hectare (152-acre) biological Site of Special Scientific Interest west of Reigate in Surrey. An area of 51.6 hectares is also a Local Nature Reserve. Seven bowl barrows dating to the Bronze Age are designated Scheduled Monuments.
Willingford Meadows is a 10.5-hectare (26-acre) biological Site of Special Scientific Interest south-west of Burwash in East Sussex.
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 (47-acre) 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 (11-acre) 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.
Sarratt Bottom nature Reserve in Hertfordshire is a 3.2-hectare (7.9-acre) biological Site of Special Scientific Interest. The site is a meadow beside the River Chess. It is an example of damp grassland which has been traditionally managed for grazing. There are also areas of swamp and marsh. The main plants in grassland areas include sweet vernal grass and meadow foxtail, and marsh horsetail and common spike-rush are common in damper areas. The site has hedgehogs and a wide variety of wetland birds and invertebrates.
Tewinbury is a 7.5-hectare (19-acre) biological Site of Special Scientific Interest near Tewin in Hertfordshire. The local planning authority is East Hertfordshire District Council, and the site is managed by the Herts and Middlesex Wildlife Trust
Long Herdon Meadow is a 4.5-hectare (11-acre) biological Site of Special Scientific Interest south of Marsh Gibbon in Buckinghamshire. It is part of Upper Ray Meadows nature reserve, which is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Upper Ray Meadows is a 181-hectare nature reserve, managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust, south of Marsh Gibbon in Buckinghamshire. It is composed of a number of areas, one of which, Long Herdon Meadow, is a biological Site of Special Scientific Interest.
Tingewick Meadows is an 11.1-hectare (27-acre) biological Site of Special Scientific Interest south of Tingewick in Buckinghamshire.
Temple Island Meadows is a 14.1-hectare (35-acre) biological Site of Special Scientific Interest on the Buckinghamshire bank of the River Thames. It is north of Henley-on-Thames and opposite Temple Island, an island in the Thames.
Garrold's Meadow is a 5 hectare biological Site of Special Scientific Interest north of Leigh-on-Sea in Essex. The local planning authority is Castle Point Borough Council.
South Thames Estuary and Marshes is a 5,289-hectare (13,070-acre) biological Site of Special Scientific Interest which stretches between Gravesend and the mouth of the River Medway in Kent. Part of it is a Nature Conservation Review site, Grade I, and part is a Royal Society for the Protection of Birds nature reserve. It is part of the Thames Estuary and Marshes Ramsar internationally important wetland site and Special Protection Area under the European Union Directive on the Conservation of Wild Birds.
Papercourt Marshes is a 10-hectare (25-acre) nature reserve in the south-east of the borough of Woking in Surrey. It is managed by the Surrey Wildlife Trust. A roughly 50 hectares lake and associated surrounds, including the marshes totalling 20.0 hectares is designated a biological Site of Special Scientific Interest as Papercourt.
Charleshill SSSI is a 10.1-hectare (25-acre) biological Site of Special Scientific Interest west of Elstead in Surrey. It is part of Thundry Meadows nature reserve, which is owned and managed by the Surrey Wildlife Trust
Rushy Meadows is an 8.9-hectare (22-acre) biological Site of Special Scientific Interest on the western outskirts of Kidlington in Oxfordshire.
Hook Meadow and The Trap Grounds is a 11.9-hectare (29-acre) biological Site of Special Scientific Interest on the northern outskirts of Oxford in Oxfordshire.
Bere Mill Meadows is a 10.3-hectare (25-acre) biological Site of Special Scientific Interest east of Whitchurch in Hampshire.
Foxlease and Ancells Meadows is a 68.8-hectare (170-acre) biological Site of Special Scientific Interest on the western outskirts of Farnborough in Hampshire.The site is in seven areas, two of which are nature reserves managed by the Hampshire and Isle of Wight Wildlife Trust, Ancells Farm and Whitehouse Meadow.
