Originally Posted by
chevvron
I vaguely recall it was moved to its present position sometime after 1980 having been notified as 'withdrawn' for a short time.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.
Those Pooley's coordinates point to the middle of the field next to the pony club, about 150 yards from the actual position of the antenna.
That amount of offset is the right order of magnitude for the different between the WGS84 and OSGB36 datums, as I recall from writing a routine about 20 years ago to convert between the two.
As to whether the NDB has been moved from a previous position, there may be some truth in that - despite the name, its current location is actually closer to Leatherhead than Epsom, but it may not have been in the past. More research required !