4 ms·
OSGB36, most likely (see https://en.wikipedia.org/wiki/Ordnance_Survey_National_Grid https://en.wikipedia.org/wiki/Ordnance_Survey_National_Grid). You can use
by bramblerose 8y ago
OSGB36, most likely (see https://en.wikipedia.org/wiki/Ordnance_Survey_National_Grid https://en.wikipedia.org/wiki/Ordnance_Survey_National_Grid).
You can use https://epsg.io/map#srs=27700&x=262540.000553&y=778255.000820&z=10&layer=streets https://epsg.io/map#srs=27700&x=262540.000553&y=778255.00082... to plot the listed coordinates.