Whittlewood Forest is a former medieval hunting forest east of Silverstone in Northamptonshire in England. It is managed by the Forestry England. There are tracts of ancient woodland within it and old ditches can be found at the edges of several individual woods. The area has been the subject of extensive academic historical research. An area of 400 hectares in seven different patches has been designated a biological Site of Special Scientific Interest (SSSI), which is about half the size of an average English parish. It is a Nature Conservation Review site, Grade 2.
Deben Estuary is a 981.1 hectare biological Site of Special Scientific Interest (SSSI) covering the River Deben and its banks 12 kilometres from its mouth north of Felixstowe to Woodbridge in Suffolk. It is a Ramsar internationally important wetland site and a Special Protection Area under the European Union Directive on the Conservation of Wild Birds. It is also in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty. It partly overlaps two geological SSSIs, Ferry Cliff, Sutton and Ramsholt Cliff.
Dibden Bay is a 229.4-hectare (567-acre) biological Site of Special Scientific Interest (SSSI) between Marchwood and Hythe in Hampshire.
Badby Wood is a 47.2 hectare biological Site of Special Scientific Interest (SSSI) south of Badby in Northamptonshire.
Dogsthorpe Star Pit is a 36.4 hectare biological Site of Special Scientific Interest (SSSI)) on the eastern outskirts of Peterborough in Cambridgeshire. It is also designated a Local Nature Reserve, and it is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.
Gamlingay Wood is a 48.4 hectare biological Site of Special Scientific Interest (SSSI) north of Gamlingay in Cambridgeshire. It is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.
Wangford Warren and Carr is a 67.8 hectare biological Site of Special Scientific Interest between Brandon and Lakenheath in Suffolk. It is a Nature Conservation Review site, Grade I, and part of the Breckland Special Area of Conservation, and Special Protection Area An area of 15 hectares is managed as a nature reserve by the Suffolk Wildlife Trust
Eversden and Wimpole Woods is a 67.1 hectare biological Site of Special Scientific Interest between Kingston and Orwell in Cambridgeshire. The site has been designated a Special Area of Conservation for its barbastelle bats.
Alder Wood and Meadow is a 13.2 hectare biological Site of Special Scientific Interest south-west of Corby in Northamptonshire.
River Ise and Meadows is a 13.5 hectare biological Site of Special Scientific Interest along the River Ise in Northamptonshire between Geddington and the Kettering to Corby railway line east of Rushton.
Lodge Wood and Sandford Mill is a 2.3-hectare (5.7-acre) biological Site of Special Scientific Interest east of Woodley in Berkshire.
Dew's Ponds is a 6.7 hectare biological Site of Special Scientific Interest (SSSI) south of Halesworth in Suffolk. It is a Special Area of Conservation.
Potton Hall Fields, Westleton is a 16.7 hectare biological Site of Special Scientific Interest ( west of Dunwich in Suffolk. It is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Breckland Farmland is a 13,392.4 hectare biological Site of Special Scientific Interest (SSSI) in many separate areas between Swaffham in Norfolk and Bury St Edmunds in Suffolk. It is part of the Breckland Special Protection Area under the European Union Directive on the Conservation of Wild Birds.
Terrace Hills Pasture is an 11.3 hectare biological Site of Special Scientific Interest north of Eastwell in Leicestershire.
River Mease SSSI is a 23.0 hectares biological Site of Special Scientific Interest. It is a stretch of the River Mease and its tributary Gilwiskaw Brook, running between Alrewas in Staffordshire and Packington in Leicestershire. It is also a Special Area of Conservation The river goes through private land, but it is crossed by roads and footpaths.
Wymondham Rough is a 6.0 hectares biological Site of Special Scientific Interest (SSSI) east of Stapleford in Leicestershire. The SSSI is part of the 12.5 hectare Wymondham Rough nature reserve, which is managed by the Leicestershire and Rutland Wildlife Trust.
East Harling Common is a 15.1-hectare (37-acre) biological Site of Special Scientific Interest east of Thetford in Norfolk.
Porton Down SSSI is a 1,559-hectare (3,850-acre) biological Site of Special Scientific Interest on the border of Hampshire and Wiltshire. It is adjacent to Porton Down science park near Porton and much of it is Ministry of Defence property which is closed to the public. It is a Nature Conservation Review site, Grade I, a Special Area of Conservation and a Special Protection Area.
