Based in the Eastern English Region,London English Region & South East English Region.
The TQ57 10 square kilometre grid intersects with the settlements of Aveley,Barnehurst,Bean,Belvedere,Bexley,Bexley Heath,Chafford Hundred,Clement Street,Coldblow,Crayford,Darent Industrial Park,Darenth,Dartford,Ebbsfleet Valley,Erith,Green Street Green,Hawley,Hextable,Hook Green,Joyden's Wood,Lessness Heath,North End,North Stifford,Purfleet,Slade Green,South Stifford,Stone,Stonehill Green,Sutton at Hone,Swanscombe,Thamesmead,Thamesmead East,West Thurrock & Westwood.
TQ57 is within the post towns of Belvedere, Kent, Bexley, Kent, Bexleyheath, Kent, Dartford, Kent, Erith, Kent, Gravesend, Kent, Grays, Essex, Greenhithe, Kent, Purfleet, Essex, Rainham, Essex, Sidcup, Kent, South Ockendon, Essex, Swanley, Kent & Swanscombe, Kent.
The square is within Bexley London Boro, Dartford District, Havering London Boro, Sevenoaks District & Thurrock councils.
The TQ57 national grid square measures 10 km by 10 km and has an area of 1,000 kilometres squared.
The technical term for a 10 km map square is a Hectad.
When this 10 km square is divided into a grid 10 by 10 it gives the next size of grid square. This unit is called a Monad and measures 1km square. 100 monads fit in a 10km square.
Out of the monads generated from square TQ57, 511 are land and -411 are sea. Sea squares are disregarded on this site as they contain no land features.
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| Corner | Latitude | Longitude | Easting | Northing |
|---|---|---|---|---|
| South West Corner | 51.406458 | 0.155389 | 550000 | 170000 |
| South East Corner | 51.406458 | 0.303574 | 560000 | 170000 |
| North West Corner | 51.499042 | 0.155389 | 550000 | 180000 |
| North East Corner | 51.499042 | 0.303574 | 560000 | 180000 |