Walk along the public footpath until you come to GZ. The roadway can get muddy at times especially after rain so be careful.
You are looking for a custon made cache here. Please replace exactly where you retrieved it from. You will need tweezers and a pen for the log.
If you continue along the path and cross the railway line you could venture over to the common where there are wonderful views of the coastline, not to mention the fawna and flora on the common.