The path (and cache) is easily accessible from the car park near the church in Southwater or from the Bax Castle PH between Southwater and Christ's Hospital. There are two other caches in close proximity to the site - Southwater Stash and A Tale of Two Copses; armed with a map, you should be able to do all three in one day!
This cache comprises a regular size plastic box, clearly marked. The given co-ordinates take you to a way-marker. The northerly reference provides digits A and B; the southerly reference provides digits C and D.
The cache is hidden at N51 01.XYZ W 000 21.UVW where:
X is A + B + C + D
Y is A + C
Z is A x D
U is A + D
V is B
W is A + C + D
The path can be very busy at the weekends so care must be taken when retrieving and re-hiding the container.