Ordnance Survey National Transformation
Accuracy 0.2m at 67% confidence level. Withdrawn and replaced by ETRS89 to OSGB36 / British National Grid (2) (code 7952).
http://www.gps.gov.uk/gpssurveying.asp
2021-05-13
Geodesy.
See CRS code 4258 for recommended coordinate axis representation for the human interface.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg