To answer Station Master’s query above. He has supplied me with the coordinates for the proposed cache and it is NOT in an SSSI but in a Scheduled Monument! All Scheduled Monuments are shown on the MAGIC map (http://benchmarks.org.uk/magicmapit.php?) and this map is ALWAYS used when a reviewer checks a cache location. It is highly unlikely that they will allow a cache on or in a Scheduled Monument, whether or not you have landowner’s permission.