Likely georeference error. The well is probably the one shown just north of Sedgwick Castle on the Ordnance Survey 1:25,000 scale (in Get-a-map). That is consistent with the posting of 27 July 20007.
Map Ref: TQ179270
Latitude: 51° 1'50.90"N
Longitude: 0°19'6.70"W
Something is not right. This message is just to keep things from messing up down the road