Devil's Dyke or Devil's Ditch is a linear earthen barrier, thought to be of Anglo-Saxon origin, in eastern Cambridgeshire and Suffolk. It runs for 11 kilometres (6.8 mi) in an almost straight line from Reach to Woodditton, with a 10-metre-high (33 ft) ditch and bank system facing southwestwards, blocking the open chalkland between the marshy fens to the north and the formerly wooded hills to the south. It is a Scheduled Monument, a biological Site of Special Scientific Interest and a Special Area of Conservation.
Fleam Dyke is a linear earthwork between Fulbourn and Balsham in Cambridgeshire, initiated some time between AD 330 and AD 510. It is three miles long and seven metres high from ditch to bank, and its ditch faces westwards, implying invading Saxons as its architects. Later, it formed a boundary of the Anglo-Saxon administrative division of Flendish Hundred. At a prominent point, the earthwork runs beside Mutlow Hill, crowned by a 4000-year-old Bronze Age burial mound.
Rex Graham Reserve is a 2.8-hectare (6.9-acre) biological Site of Special Scientific Interest east of Mildenhall in Suffolk. It is a Special Area of Conservation, and part of the Breckland Special Protection Area. It was formerly managed by the Suffolk Wildlife Trust.
Warham Camp is an Iron Age circular hill fort with a total diameter of 212 metres near Warham, south of Wells-next-the-Sea in Norfolk. It is a scheduled monument dated to between 800BC and 43AD, and a 5.1-hectare (13-acre) biological Site of Special Scientific Interest, located within the Norfolk Coast Area of Outstanding Natural Beauty. The University of East Anglia has described it as the best-preserved hill fort in Norfolk.
Bradfield Woods is an 81.4-hectare (201-acre) biological Site of Special Scientific Interest between Bury St Edmunds and Stowmarket in Suffolk. The site is in three separate blocks, the adjoining Felsham Hall and Monkspark Woods, and the much smaller separate Hedge Wood and Chensil Grove. Felsham Hall and Monkspark Woods are designated a 63.3 National Nature Reserve, also called Bradfield Woods, and are managed by the Suffolk Wildlife Trust.
Blo' Norton and Thelnetham Fens are a 21.3-hectare (53-acre) biological Site of Special Scientific Interest (SSSI) on the Norfolk/Suffolk border. Blo' Norton Fen is in the parish of Blo' Norton in Norfolk and Thelnetham Fen is in Thelnetham parish in Suffolk. It is a Nature Conservation Review site, Grade 2, and part of the Waveney and Little Ouse Valley Fens Special Area of Conservation, Thelnetham Fen is managed by the Suffolk Wildlife Trust and Blo' Norton Fen by the Little Ouse Headwaters Project (LOHP).
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
Barrington Chalk Pit is a 97.1-hectare (240-acre) geological Site of Special Scientific Interest near Barrington in Cambridgeshire. It is a Geological Conservation Review site.
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.
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.
Breckland Forest is an 18,126 hectare biological and geological Site of Special Scientific Interest 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. It contains two Geological Conservation Review sites, Beeches Pit, Icklingham and High Lodge. Barton Mills Valley is a Local Nature Reserve in the south-west corner of the site.
Lineage Wood & Railway Track, Long Melford is a 78.7-hectare (194-acre) biological Site of Special Scientific Interest north-east of Long Melford in Suffolk.
Newmarket Heath is a 279.3-hectare-large (690-acre) biological Site of Special Scientific Interest in Newmarket in Suffolk. It covers most of Newmarket Racecourse.
Horringer Court Caves is a 3.8-hectare (9.4-acre) biological Site of Special Scientific Interest on the southern outskirts of Bury St Edmunds in Suffolk.
Little Blakenham Pit is a 3.4-hectare (8.4-acre) biological Site of Special Scientific Interest in Little Blakenham in Suffolk.
Caistor St Edmund Chalk Pit is a 23.6-hectare (58-acre) geological Site of Special Scientific Interest south of Norwich in Norfolk. It is a Geological Conservation Review site.
Eaton Chalk Pit is a 0.16-hectare (0.40-acre) biological Site of Special Scientific Interest on the southern outskirts of Norwich in Norfolk.
Alderford Common is a 17.5-hectare (43-acre) biological Site of Special Scientific Interest north-west of Norwich in Norfolk.
Betchworth Quarry and Lime Kilns is a 27-hectare (67-acre) nature reserve north of Betchworth in Surrey. Betchworth Quarry only is managed by Surrey Wildlife Trust. It is part of the Mole Gap to Reigate Escarpment Site of Special Scientific Interest and Special Area of Conservation.
Brockham Limeworks is a 45-hectare (110-acre) nature reserve north of Brockham in Surrey. It is owned by Surrey County Council. Part of it is a Scheduled Monument, and it is part of the Mole Gap to Reigate Escarpment Site of Special Scientific Interest and Special Area of Conservation.
