Colne Estuary is a 2915 hectare biological and geological Site of Special Scientific Interest near Brightlingsea in Essex. It is also a Nature Conservation Review site, a National Nature Reserve, a Ramsar wetland site of international importance, a Special Protection Area, a Special Area of Conservation, and a Geological Conservation Review site. Three areas in the site are managed by the Essex Wildlife Trust, Colne Point, Fingringhoe Wick and Howlands Marsh.
Wansunt Pit is a 1.9-hectare (4.7-acre) geological Site of Special Scientific Interest in Dartford Heath between Crayford in the London Borough of Bexley and Dartford in Kent. It is also a Geological Conservation Review site. It is important geologically because it exposes the Dartford Heath Gravel, and the relationship of this exposure to the Swanscombe sequence and the Thames Terraces is a controversial issue in Thames Pleistocene studies. The site is part of Braeburn Park, a nature reserve managed by the London Wildlife Trust.
Hillcollins Pit or Furneux Pelham Gravel Pit is a 0.2-hectare (0.49-acre) geological Site of Special Scientific Interest near Furneux Pelham in Hertfordshire. The local planning authority is East Hertfordshire District Council. it was identified as a site of national importance in the Geological Conservation Review in 1988.
Fern House Gravel Pit is a 1.3-hectare (3.2-acre) geological Site of Special Scientific Interest in Fern, near Bourne End in Buckinghamshire. It is also a Geological Conservation Review site.
Highlands Farm Pit is a 0.6-hectare (1.5-acre) geological Site of Special Scientific Interest in Henley-on-Thames in Oxfordshire. It is a Geological Conservation Review site.
Hall's Quarry is a 0.8-hectare (2.0-acre) geological Site of Special Scientific Interest north-west of Ugley Green in Essex. It is a Geological Conservation Review site.
Globe Pit is a 0.4-hectare (0.99-acre) geological Site of Special Scientific Interest in Little Thurrock in Essex. It is a Geological Conservation Review site.
Purfleet Chalk Pits is a 10.7-hectare (26-acre) geological Site of Special Scientific Interest in Purfleet in Essex. It is a Geological Conservation Review site.
Ardleigh Gravel Pit is a 1.2-hectare (3.0-acre) geological Site of Special Scientific Interest south of Ardleigh in Essex. It is a Geological Conservation Review site.
Wivenhoe Gravel Pit is a 2.1-hectare (5.2-acre) geological Site of Special Scientific Interest north of Wivenhoe in Essex. It is a Geological Conservation Review site.
Holland-on-Sea Cliff is a 0.1-hectare (0.25-acre) geological Site of Special Scientific Interest in Holland-on-Sea, north-west of Clacton-on-Sea in Essex. It is a Geological Conservation Review site.
St Osyth Pit is a 0.1-hectare (0.25-acre) geological Site of Special Scientific Interest north of St Osyth in Essex. It is a Geological Conservation Review site.
Little Oakley Channel Deposit is a three-hectare geological Site of Special Scientific Interest in Little Oakley in Essex, England. It is a Geological Conservation Review site.
Lofts Farm Pit is a 4.5-hectare (11-acre) geological Site of Special Scientific Interest in Heybridge, a suburb of Maldon in Essex. It is a Geological Conservation Review site.
Maldon Cutting is a 0.1-hectare (0.25-acre) geological Site of Special Scientific Interest in Maldon in Essex. It is a Geological Conservation Review site.
Newney Green Pit is a 0.07-hectare (0.17-acre) geological Site of Special Scientific Interest west of Writtle in Essex. It is a Geological Conservation Review site.
Lion Pit is a 2.5-hectare (6.2-acre) geological Site of Special Scientific Interest in Grays in Essex. It is a Geological Conservation Review site, and part of the Chafford Gorges Nature Park, which is managed by the Essex Wildlife Trust.
Aylesford Pit is a 1.5-hectare (3.7-acre) geological Site of Special Scientific Interest north of Maidstone in Kent. It is a Geological Conservation Review site.
