Eriswell Low Warren is a 7.4-hectare (18-acre) biological Site of Special Scientific Interest north-east of Eriswell in Suffolk.[1][2] It is a Nature Conservation Review site, Grade I,[3] and part of the Breckland Special Protection Area under the European Union Directive on the Conservation of Wild Birds.[4][5] 
The site is mainly unimproved acidic grassland on sandy soils, which has a variety of typical Breckland flora, and there are also areas of lichens and bryophytes. Rare plants include purple-stem cat's-tail, spring speedwell, Spanish catchfly and perennial knawel.[6] 
The site is private land with no public access. 
 References
  52°23′02″N 0°33′14″E / 52.384°N 0.554°E / 52.384; 0.554 
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| Biological |  - Abbey Wood, Flixton
  - Alde–Ore Estuary
  - Arger Fen
  - Bangrove Wood, Ixworth
  - Barking Woods
  - Barnby Broad and Marshes
  - Barnham Heath
  - Berner's Heath
  - Bixley Heath
  - Black Ditches, Cavenham
  - Blaxhall Heath
  - Blo' Norton and Thelnetham Fens
  - Bradfield Woods
  - Breckland Farmland
  - Breckland Forest
  - Brent Eleigh Woods
  - Bugg's Hole Fen, Thelnetham
  - Burgate Wood
  - Cavendish Woods
  - Cavenham–Icklingham Heaths
  - Cherry Hill and The Gallops, Barton Mills
  - Chippenhall Green
  - Combs Wood
  - Cornard Mere
  - Crag Pit, Sutton
  - Cransford Meadow
  - Deadman's Grave, Icklingham
  - Deben Estuary
  - Dew's Ponds
  - Edwardstone Woods
  - Elmsett Park Wood
   - Fakenham Wood and Sapiston Great Grove
  - Fox Fritillary Meadow
  - Foxhole Heath
  - Freston and Cutler's Woods with Holbrook Park
  - Frithy and Chadacre Woods
  - The Gardens, Great Ashfield
  - Gipping Great Wood
  - Glemsford Pits
  - The Glen Chalk Caves, Bury St Edmunds
  - Gosbeck Wood
  - Gromford Meadow
  - Groton Wood
  - Gypsy Camp Meadows, Thrandeston
  - Hay Wood, Whepstead
  - Horringer Court Caves
  - High House Meadows, Monewden
  - Hintlesham Woods
  - Hopton Fen
  - How Hill Track
  - Iken Wood
  - Ipswich Heaths
  - Kentwell Woods
  - Knettishall Heath
  - Lackford Lakes
  - Lakenheath Poor's Fen
  - Lakenheath Warren
  - Landguard Common
  - Laurel Farm Meadow
  - Leiston - Aldeburgh
  - Lineage Wood & Railway Track, Long Melford
  - Lingwood Meadows
  - Little Blakenham Pit
  - Little Heath, Barnham
  - London Road Industrial Estate, Brandon
  - Lordswell Field
  - Maidscross Hill
  - Major Farm Meadow
  - Metfield Meadow
  - Mickfield Meadow
  - Middle Wood, Offton
  - Milden Thicks
  - Minsmere–Walberswick Heaths and Marshes
  - Moat Farm Meadows
  - Monewden Meadows
  - Nacton Meadows
  - Newbourne Springs
  - Newmarket Heath
  - Norton Wood
  - Orwell Estuary
  - Over and Lawn Woods
  - Pakefield to Easton Bavents
  - Pakenham Meadows
  - Pashford Poor's Fen, Lakenheath
  - Potton Hall Fields, Westleton
  - RAF Lakenheath
  - Redgrave and Lopham Fens
  - Rex Graham Reserve
  - Riverside House Meadow
  - Sandlings Forest
  - Sinks Valley, Kesgrave
  - Sizewell Marshes
  - Snape Warren
  - Sotterley Park
  - Sprat's Water and Marshes, Carlton Colville
  - Stallode Wash, Lakenheath
  - Stanton Woods
  - Staverton Park and The Thicks, Wantisden
  - Stour Estuary
  - Sutton and Hollesley Heaths
  - Thetford Heaths
  - Thorpe Morieux Woods
  - Titsal Wood, Shadingfield
  - Trundley and Wadgell's Wood, Great Thurlow
  - Tunstall Common
  - Wangford Warren and Carr
  - Weather and Horn Heaths, Eriswell
  - West Stow Heath
  - Westhall Wood and Meadow
  - Weston Fen
  - Wilde Street Meadow
  - Wortham Ling
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| Geological |  - Alde-Ore Estuary
  - Aldeburgh Brick Pit
  - Aldeburgh Hall Pit
  - Bawdsey Cliff
  - Bobbitshole, Belstead
  - Breckland Forest
  - Buckanay Farm Pit, Alderton
  - Chillesford Church Pit
  - Corton Cliffs
  - Crag Farm Pit, Sudbourne
  - Crag Pit, Aldeburgh
  - Creeting St Mary Pits
  - Ferry Cliff, Sutton
  - Flixton Quarry
  - Gedgrave Hall Pit
  - Great Blakenham Pit
  - Hascot Hill Pit
  - Holton Pit
  - Hoxne Brick Pit
  - Neutral Farm Pit, Butley
  - Pakefield to Easton Bavents
  - Ramsholt Cliff
  - Red House Farm Pit
  - Red Lodge Heath
  - Richmond Farm Pit, Gedgrave
  - Rockhall Wood Pit, Sutton
  - Round Hill Pit, Aldeburgh
  - Sandy Lane Pit, Barham
  - Stoke Tunnel Cutting, Ipswich
  - Stour Estuary
  - Sudbourne Park Pit
  - Valley Farm Pit, Sudbourne
  - Waldringfield Pit
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