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.
Rendlesham Forest is a 1,500-hectare (3,700-acre) mixed woodland in Suffolk owned by Forestry England with recreation facilities for walkers, cyclists and campers.
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.
Lackford Lakes is a 105.8-hectare (261-acre) biological Site of Special Scientific Interest (SSSI) north and east of Lackford in Suffolk. The SSSI is part of the 131-hectare (320-acre) Lackford Lakes nature reserve, which is managed by the Suffolk Wildlife Trust.
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.
Arger Fen is a 49.7-hectare (123-acre) biological Site of Special Scientific Interest (SSSI) south-east of Sudbury in Suffolk, England. The site occupies two separate areas. The 17.6-hectare (43-acre) Arger Fen Local Nature Reserve is part of the larger eastern block, and contains part of the 21-hectare (52-acre) Tiger Hill Local Nature Reserve, along with part of the 110-hectare (270-acre) Arger Fen and Spouse's Vale, a nature reserve managed by the Suffolk Wildlife Trust. The site lies in the Dedham Vale Area of Outstanding Natural Beauty,
Captain's Wood is a 62 hectare nature reserve in Sudbourne in Suffolk. It is owned and managed by the Suffolk Wildlife Trust.
Combs Wood is a 15.1 hectares biological Site of Special Scientific Interest on the southern outskirts of Stowmarket in Suffolk. It is owned and managed by the Suffolk Wildlife Trust.
Dunwich Forest is an area of forest and lowland heath around 1 mile (1.6 km) north-west of the village of Dunwich in the English county of Suffolk. The forest covers an area of approximately 9 square kilometres and was originally planted by the Forestry Commission. The forest is within the Suffolk Coast and Heaths Area of Outstanding Natural Beauty and is in the area known as the Suffolk Sandlings. South of the reserve is the National Trust property of Dunwich Heath, one of the largest remaining areas of lowland heath on the Suffolk coast, and the RSPB reserve at Minsmere. To the north and east of the forest are Dingle Marshes, part of the Suffolk Coast National Nature Reserve.
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.
Snape Marshes is a 19.8-hectare (49-acre) nature reserve south-east of Snape in Suffolk. It is owned and managed by the Suffolk Wildlife Trust.
Roydon Fen is a 17.2 hectare Local Nature Reserve south of Roydon, on the western outskirts of Diss in Norfolk. It is owned by South Norfolk District Council and managed by the Suffolk Wildlife Trust.
Reydon Wood is a 16 hectare nature reserve west of Wangford in Suffolk, England. It is managed by the Suffolk Wildlife Trust.
Mellis Common is a 59 hectare nature reserve in Mellis in Suffolk. It is managed by the Suffolk Wildlife Trust.
Gunton Meadow is a 2-hectare (4.9-acre) nature reserve in Lowestoft in Suffolk. It is managed by the Suffolk Wildlife Trust.
Foxley Wood is a nature reserve in Foxley, Norfolk, England, the largest ancient woodland and coppice in Norfolk. The Norfolk Wildlife Trust, which manages this reserve, bought it in 1998. It is 123 hectares in size. It is a Site of Special Scientific Interest, a Nature Conservation Review site, Grade 2, and a National Nature Reserve.
Suffolk Coast National Nature Reserve is a wildlife reserve on the North Sea coast of the English county of Suffolk. It is located around the village of Walberswick to the south of the town of Southwold. The reserve was designated in 2003, combining the existing Walberswick National Nature Reserve with reserves at Dingle Marshes and Hen Reedbeds to create a 1,340 hectares reserve.
Barking Woods is a 98.7-hectare (244-acre) biological Site of Special Scientific Interest in six separate blocks north-east of Ipswich in Suffolk. Part of it is a 20-hectare (49-acre) nature reserve called Bonny Wood, which is owned and managed by the Suffolk Wildlife Trust.
Church Farm Marshes is a 56 hectare nature reserve in Thorington in Suffolk. It is managed by the Suffolk Wildlife Trust.
Lound Lakes is a 113 hectares nature reserve and series of reservoirs on the border between the English counties of Norfolk and Suffolk. It is 2 miles (3.2 km) south-west of Gorleston-on-Sea, 5 miles (8.0 km) north-west of Lowestoft and around 1.5 miles (2.4 km) inland from the North Sea coast, in the parishes of Belton with Browston, Hopton-on-Sea and Lound. It is owned by Essex and Suffolk Water and managed by the Suffolk Wildlife Trust.
