Alfreton Divers: Many thanks to m n m 45 for drawing my attention to the missing cache and compromised final location. The adjacent house has done some radical landscaping meaning the final location is now very exposed and the cache location very visible (and probably removed by the home owners or fence workmen).
A visit today shows the cache clearly missing and GZ too exposed to replace in the same location. Rather than rejig the puzzle I shall instead archive and let this one go, after almost six years.
I have asked m n m 45 to change their DNF to Found as they were specific in their description of the final location and were unable to find the container due to it being missing.
Allowing AJ & ER to log finds here as they were at GZ along with a replacement container which was not left in place and brought back home pending archiving.
Many thanks to all who visited.