This is a puzzle cache so don't go to the listed coordinates, there used to be something there (GC6114Q), but no longer.
This is a simple offset puzzle cache, the trick is you will need to find the starting coordinates. To find the starting coordinates you will need to find the plaque in the image below.
The inscription on the plaque says:
Marlborough
M.U. Friendly Society
125th Anniversary
1860 - 1985
The M.U.F.S is not really a secret society, just a society that benefits its members.
Once you have found the starting coordinates you will need to plot a bearing of 342 degrees and a distance of 2290m to find the final.
There's no geochecker with this one, but it should be obvious when you get to GZ, apart from finding the cache of course.
B.Y.O.P
Good Luck
Update 07 Dec 2020: If you have solved this, but not found it prior to this date, you will have to redo your calculations because the final has been shifted several kilometres with the assistance of a reviewer.