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.
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.
Launde Big Wood is a 41.1 hectares biological Site of Special Scientific Interest east of Leicester. It is part of Launde Woods nature reserve, which is owned by the Leicester Diocesan Board of Finance and managed by the Leicestershire and Rutland Wildlife Trust.
Newbourne Springs is a 15.7-hectare (39-acre) biological Site of Special Scientific Interest in Newbourne in Suffolk. It is owned by Anglian Water and managed by the Suffolk Wildlife Trust.
Groton Wood is a 20.2-hectare (50-acre) biological Site of Special Scientific Interest north-east of Groton in Suffolk. It is owned and 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.
Mickfield Meadow is a 1.9-hectare (4.7-acre) biological Site of Special Scientific Interest north of Mickfield in Suffolk. It is managed by the Suffolk Wildlife Trust.
Wangford Warren and Carr is a 67.8-hectare (168-acre) biological Site of Special Scientific Interest between Brandon and Lakenheath in Suffolk. It is a Nature Conservation Review site, Grade I, and part of the Breckland Special Area of Conservation, and Special Protection Area An area of 15 hectares is managed as a nature reserve by the Suffolk Wildlife Trust
Bonny Wood is a 20 hectare nature reserve east of Barking Tye in Suffolk. It is managed by the Suffolk Wildlife Trust. The site is part of the Barking Woods biological Site of Special Scientific Interest.
Bull's Wood is a 12 hectare nature reserve east of Cockfield in Suffolk, England. It is managed by the Suffolk Wildlife Trust, and is part of the Thorpe Morieux Woods Site of Special Scientific Interest.
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.
Cornard Mere is an 8.5-hectare (21-acre) biological Site of Special Scientific Interest in Little Cornard in Suffolk. It is managed by the Suffolk Wildlife Trust.
Hopton Fen is a 15.3-hectare (38-acre) biological Site of Special Scientific Interest north of Hopton in Suffolk. It is managed by the Suffolk Wildlife Trust.
Sutton and Hollesley Heaths is a 483.3-hectare (1,194-acre) biological Site of Special Scientific Interest south-east of Woodbridge in Suffolk. Most of the site is managed by the Suffolk Wildlife Trust as Sutton and Hollesley Commons. It is part of the Sandlings Special Protection Area under the European Union Directive on the Conservation of Wild Birds, and the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Metfield Meadow is a 1.3-hectare (3.2-acre) biological Site of Special Scientific Interest west of Halesworth in Suffolk. It is owned and managed by Suffolk Wildlife Trust under the name Winks Meadow.
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.
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.
