Suffolk Wildlife Trust (SWT) describes itself as the county's "nature charity – the only organisation dedicated wholly to safeguarding Suffolk's wildlife and countryside." It is a registered charity, and its headquarters is at Brooke House in Ashbocking, near Ipswich. It was founded in 1961, and is one of 46 wildlife trusts covering the Great Britain and Northern Ireland. As of March 2017, it has 13,200 members, and it manages 3,120 hectares of land in 60 nature reserves, most of which are open to the public. It had an income of £3.9 million in the year to 31 March 2017.
Fulbourn Fen is a 27.3-hectare (67-acre) biological Site of Special Scientific Interest east of Fulbourn, Cambridgeshire. It is privately owned and managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.
Upwood Meadows is a 6 hectare biological Site of Special Scientific Interest west of Upwood in Cambridgeshire. It is also a National Nature Reserve and a Grade I Nature Conservation Review site. It is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.
Soham Wet Horse Fen is a 33.8-hectare (84-acre) biological Site of Special Scientific Interest east of Soham in Cambridgeshire. A 3.6-hectare (8.9-acre) field in the north-west corner is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire as Soham Meadow.
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).
Ashdon Meadows is a 1.5-hectare (3.7-acre) biological Site of Special Scientific Interest south of Ashdon in Essex.
Chippenham Fen and Snailwell Poor's Fen is a 155.9-hectare (385-acre) biological Site of Special Scientific Interest south-east of Fordham in Cambridgeshire, England. It is a Nature Conservation Review site, Grade I, a Ramsar wetland site and a Special Area of Conservation. It is managed by Natural England.
Wilbraham Fens is a 62.5-hectare (154-acre) biological Site of Special Scientific Interest east of Cambridge.
River Ise and Meadows is a 13.5 hectare biological Site of Special Scientific Interest along the River Ise in Northamptonshire between Geddington and the Kettering to Corby railway line east of Rushton.
Pashford Poor's Fen, Lakenheath is a 12.4-hectare (31-acre) biological Site of Special Scientific Interest east of Lakenheath in Suffolk.
Weston Fen is a 49.7-hectare (123-acre) biological Site of Special Scientific Interest in Hopton in Suffolk. It is part of the Waveney and Little Ouse Valley Fens Special Areas of Conservation, and an area of 37 hectares is managed as a nature reserve called Market Weston Fen by the Suffolk Wildlife Trust.
Nacton Meadows is a 4.5-hectare (11-acre) biological Site of Special Scientific Interest north-west of Levington in Suffolk. It is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty
Empingham Marshy Meadows is a 14 hectare biological Site of Special Scientific Interest north of Empingham in Rutland.
Middle Harling Fen is a 11.8-hectare (29-acre) biological Site of Special Scientific Interest south of East Harling in Norfolk.
Old Buckenham Fen is a 34.5-hectare (85-acre) biological Site of Special Scientific Interest south of Attleborough in Norfolk.
Holly Farm Meadow, Wendling is a 2.6-hectare (6.4-acre) biological Site of Special Scientific Interest west of Dereham in Norfolk.
Great Cressingham Fen is a 14.3-hectare (35-acre) biological Site of Special Scientific Interest near Great Cressingham in Norfolk. It is part of the Norfolk Valley Fens Special Area of Conservation.
Hooks Well Meadows, Great Cressingham is a 15.6-hectare (39-acre) biological Site of Special Scientific Interest near Great Cressingham] in Norfolk.
