Originally Posted by
Flap40
Taking the LAT/LONG off that as 51.20N 000.17W puts it just east of my previous plots (pink pin) so I think we can safely say it has moved.
I've just found an old AIP that shows Epsom at N 51° 21' W 000° 17', so a little further north than your pink pin.
Bearing in mind those coordinates are to the nearest minute, the potential error is up to +/- 3000 feet N-S and 1900 feet E-W, and then you need to offset the bounding box by around 400 feet to account for the OSGB36 to WGS84 offset.
But it's definitely in a different place from its current location.
