Originally Posted by
Flap40
My 1991 Pooley's has it in a slightly different position at 5119.13N 00022.22W. This might be due to a change in grid from OSGB36 to WGS84.
I vaguely recall it was moved to its present position sometime after 1980 having neen notified as 'withdrawn' for a short time. At one time the coding was 'EPS' not EPM' and I suspect (stand to be corrected) may have been changed when it moved.
The co-ordinates quoted above seem to be OSGB 36 notation and not WGS 84 but I'm sure that change didn't happen until late '90s.