Ducan's Marsh is a 3.6-hectare (8.9-acre) biological Site of Special Scientific Interest north-east of Loddon in Norfolk. It is part of the Broadland Ramsar site and Special Protection Area, and The Broads Special Area of Conservation.
Moor Park is a 6.7-hectare (17-acre) biological Site of Special Scientific Interest east of Farnham in Surrey.
Woodwalton Marsh is a 0.8-hectare (2.0-acre) biological Site of Special Scientific Interest north-east of Woodwalton in Cambridgeshire. It is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.
Thompson Water, Carr and Common is a 154.7-hectare (382-acre) biological Site of Special Scientific Interest north of Thetford in Norfolk. Most of it is managed by the Norfolk Wildlife Trust as Thompson Common. It is a Nature Conservation Review site, Grade I, and part of the Norfolk Valley Fens Special Area of Conservation. It is crossed by the Great Eastern Pingo Trail Local Nature Reserve.
Old Rectory Meadows is a 7.9-hectare (20-acre) Site of Special Scientific Interest in Denham in Buckinghamshire.
Bonemills Hollow is a 17.5-hectare (43-acre) biological Site of Special Scientific Interest east of Wittering in Cambridgeshire.
Alder Carr is a 6.7-hectare biological Site of Special Scientific Interest in Hildersham in Cambridgeshire.
Bassenhally Pit is an 8.6-hectare (21-acre) biological Site of Special Scientific Interest north-east of Whittlesey in Cambridgeshire.
St Neots Common is a 33.4-hectare (83-acre) biological Site of Special Scientific Interest in St Neots in Cambridgeshire.
Castor Flood Meadows is a 41.8-hectare (103-acre) biological Site of Special Scientific Interest on the western outskirts of Peterborough in Cambridgeshire.
Upper Nene Valley Gravel Pits is a 1,382.4 hectare biological Site of Special Scientific Interest in a chain of flooded gravel pits along 35 kilometres of the valley of the River Nene between Northampton and Thorpe Waterville in Northamptonshire. It is a Ramsar wetland site of international importance, a Special Protection Area under the European Communities Birds Directive and part of the Nene Valley Nature Improvement Area. It is also part of the River Nene Regional Park. Two areas are managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire, Summer Leys and Titchmarsh Nature Reserve.
Birch Spinney and Mawsley Marsh is a 12.3-hectare (30-acre) biological Site of Special Scientific Interest north-west of Broughton in Northamptonshire.
Neutral Farm Pit, Butley is a 1.1-hectare (2.7-acre) geological Site of Special Scientific Interest in Butley, east of Woodbridge in Suffolk. It is a Geological Conservation Review site, and is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Tickencote Marsh is a three hectare biological Site of Special Scientific Interest west of Tickencote and Great Casterton in Rutland.
Chater Valley is a 3.8-hectare (9.4-acre) biological Site of Special Scientific Interest north of Loddington in Leicestershire.
Misterton Marshes is a 6.8-hectare (17-acre) biological Site of Special Scientific Interest north of Misterton in Leicestershire.
Lockington Marshes is an 11.3-hectare (28-acre) biological Site of Special Scientific Interest north of Ratcliffe on Soar in Leicestershire.
Cantley Marshes is a 272.1-hectare (672-acre) biological Site of Special Scientific Interest south-east of Norwich in Norfolk. It is managed by the Royal Society for the Protection of Birds, It is part of the Broadland Ramsar site and Special Protection Area, The Broads Special Area of Conservation and the Mid-Yare National Nature Reserve.
Crostwick Marsh is an 11.6-hectare (29-acre) biological Site of Special Scientific Interest in Crostwick, north of Norwich in Norfolk. It is part of the Broadland Ramsar site and Special Protection Area, and The Broads Special Area of Conservation.
Dillington Carr is a 55-hectare (140-acre) biological Site of Special Scientific Interest north of Dereham in Norfolk.
