Hampstead Marshall is a historic place which takes its name from the Norman Earls Marshall who owned the manor and possibly built the long vanished castle. Beside the river are the mill, bridges, lock and weir; the mill dating from the 19th Century.
At the top of the road that climbs up from the mill is the church, a large Norman and 14th Century building with an 18th Century brick tower.
The cache is hidden in a lovely clearing in the peaceful Great Holt Copse. You can park at N51 23.191 W001 24.438 and walk past the National Canine Defense League re-holming centre (expect some friendly barking) and follow the footpath into the copse.
Alternatively you can park to the west of the copse at N51° 22.872 W001° 25.414 or south at N51° 22.483 W001° 24.617 and follow those footpaths, but we have not tried them yet.
The cache is a largish screwtop contain with some camo around it.