European Terrestrial Reference System 1989 ensemble
EPSG
Ordnance Survey of Great Britain, http://www.gps.gov.uk
2021-05-13
Adopted as official definition of OSGB36 from 2002 to August 2016. Accuracy by definition exact. Accuracy compared to triangulation coordinates 0.1m at 67% confidence level.
Replaces ETRS89 to OSGB36 / British National Grid (1) (code 7913). Replaced by ETRS89 to OSGB36 / British National Grid (3) (code 7953). May be approximated to better than 0.03m using NTv2 method - see tfm code 5338.
Ordnance Survey National Transformation
United Kingdom (UK) - Great Britain - England, Scotland and Wales onshore; Isle of Man onshore.
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