Knettishall Heath is a 91.7-hectare (227-acre) biological Site of Special Scientific Interest west of Knettishall in Suffolk. A larger area of 176 hectares is the Knettishall Heath Nature Reserve, which is managed by the Suffolk Wildlife Trust.
Therfield Heath is a biological Site of Special Scientific Interest and Local Nature Reserve on the chalk escarpment just north of Therfield, Hertfordshire. Since it lies south-west of the town of Royston, it is also known locally as Royston Heath. The heath is a common on which sheep are still regularly grazed. The site offers views towards the north, over the valley of the Cam as far as Cambridge.
Cherry Hinton Pit is a 12.8-hectare (32-acre) biological Site of Special Scientific Interest (SSSI) on the south-eastern outskirts of Cambridge. The site consists of East Pit and most of the smaller West Pit. East Pit is part of the Limekiln Close and East Pit Local Nature Reserve, which is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire under the name Cherry Hinton Chalk Pits. West Pit is a separate Local Nature Reserve (LNR).
Foxhole Heath is an 85.2-hectare (211-acre) biological Site of Special Scientific Interest east of Eriswell in Suffolk. It is a Nature Conservation Review site, Grade I, and part of Breckland Special Area of Conservation and Breckland Special Protection Area under the European Union Directive on the Conservation of Wild Birds.
Buxton Heath is a 67.3-hectare (166-acre) biological Site of Special Scientific Interest north of Norwich in Norfolk. It is a Nature Conservation Review site, Grade 2, and part of the North Valley Fens Special Area of Conservation.
Sizewell Marshes form a 260-acre biological Site of Special Scientific Interest adjacent to Sizewell in Suffolk. It is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty, and is part of a 356-acre (144-ha) nature reserve managed by the Suffolk Wildlife Trust as Sizewell Belts.
Roydon Common is a 194.9-hectare (482-acre) biological Site of Special Scientific Interest east of King's Lynn in Norfolk. It is also a Grade I Nature Conservation Review site, a National Nature Reserve and a Ramsar site. It is part of the Roydon Common and Dersingham Bog Special Area of Conservation and Roydon Common and Grimston Warren nature reserve, which is managed by the Norfolk Wildlife Trust,
Berner's Heath is a 236.9-hectare (585-acre) biological Site of Special Scientific Interest north-east of Icklingham in Suffolk. It is a Nature Conservation Review site, a Special Area of Conservation, and a Special Protection Area
Snailwell Meadows is a 14.8-hectare (37-acre) biological Site of Special Scientific Interest in Snailwell in Cambridgeshire.
Limekiln Close and East Pit is a 10 hectare Local Nature Reserve (LNR) in Cherry Hinton, on the south-eastern outskirts of Cambridge. It is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire as Cherry Hinton Chalk Pits. East Pit is part of the Cherry Hinton Pit biological Site of Special Scientific Interest, which excludes Limekiln Close but includes the neighbouring West Pit.
Cavenham–Icklingham Heaths is a 419 hectare biological Site of Special Scientific Interest west of Icklingham in Suffolk. It is a Nature Conservation Review site, Grade I, and part of Breckland Special Area of Conservation and Breckland Special Protection Area under the European Union Directive on the Conservation of Wild Birds. Cavenham Heath is a 203.1 hectare National Nature Reserve.
Freston and Cutler's Woods with Holbrook Park is a 142 hectare biological Site of Special Scientific Interest south of Ipswich in Suffolk. The site is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty
Red Lodge Heath is a 20.8-hectare (51-acre) biological Site of Special Scientific Interest in Red Lodge in Suffolk.
Staverton Park and The Thicks, Wantisden is an 80.8-hectare (200-acre) biological Site of Special Scientific Interest west of Butley in Suffolk. It is a Nature Conservation Review site, Grade I, and a Special Area of Conservation. It is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Thetford Heaths is a 270.6-hectare (669-acre) biological and geological Site of Special Scientific Interest in Suffolk. It is a Nature Conservation Review site, Grade I, and parts of it are a national nature reserve, and a Geological Conservation Review, It is part of the Breckland Special Area of Conservation, and Special Protection Area A large part of this dry heathland site is calcareous grassland, and some areas are grazed by sheep or rabbits. There are several nationally rare plants and an uncommon heathland bird, and many lichens and mosses.
West Stow Heath is a 44.3-hectare (109-acre) biological Site of Special Scientific Interest west of West Stow in Suffolk. It is part of the Breckland Special Protection Area under the European Union Directive on the Conservation of Wild Birds.
Barnham Cross Common is a 69.1-hectare (171-acre) biological Site of Special Scientific Interest on the southern outskirts of Thetford in Norfolk. It is owned by Thetford Town Council and is registered common land. It is also a Local Nature Reserve and a Nature Conservation Review site, Grade 1. It is part of the Breckland Special Area of Conservation and Special Protection Area.
East Walton and Adcock's Common is a 62.4-hectare (154-acre) biological and geological Site of Special Scientific Interest south-east of King's Lynn in Norfolk. It is a Geological Conservation Review site and part of Norfolk Valley Fens Special Area of Conservation
Flordon Common is a 9.9-hectare (24-acre) biological Site of Special Scientific Interest south-east of Wymondham in Norfolk. It is a registered common part of the Norfolk Valley Fens Special Area of Conservation.
Syderstone Common is a 43.7-hectare (108-acre) biological Site of Special Scientific Interest west of Fakenham in Norfolk. An area of 24-hectare (59-acre) is managed by the Norfolk Wildlife Trust.
