You are looking for ordnance survey grid reference
In these pages learn how to use the National Grid. The National Grid is a unique reference system rhat can be applied to all Ordnance Survey maps at all scales.
www.ordnancesurvey.co.uk/oswebsite/gi/nationalgrid...
The Ordnance Survey (OS) devised the national grid reference system, and it is heavily The grid is based on the OSGB36 datum (Ordnance Survey Great Britain
en.wikipedia.org/wiki/British_national_grid_refere...
An animated guide to how the National Grid works Ordnance Survey is Great Britain's national mapping agency, providing the most accurate and up-to-date
www.ordnancesurvey.co.uk/oswebsite/education/teach...
How do I find a place on a British Ordnance Survey map from its grid reference?
www.obliquity.com/family/misc/osgrid.html
British Grid Reference System - Understanding the UK grid reference system used on Ordnance Survey maps of Great Britain.
www.sewhgpgc.co.uk/os.php
Grid lines on maps define the coordinate system, and are numbered to provide a unique reference to features. For Ordnance Survey maps, each Easting and Northing grid line is
en.wikipedia.org/wiki/Grid_reference
Ordnance Survey (OS is an Executive agency of the United Kingdom government Grid references define locations on Maps using Cartesian coordinates.
www.citizendia.org/British_national_grid_reference...
Here Simon Gillings clarifies how to give complete grid references. Two centuries of development. In 1791 the Ordnance Survey was founded as Britain's
www.bto.org/birdatlas/taking_part/your_place.htm
Ordnance Survey Grid Reference to latitude and longitude. This form converts Ordnance Survey six-figure grid references to latitude and longitude.
www.obliquity.com/astro/osgb.html
