A series of caches taking you from Tansley to Matlock. Doing the walk the opposite way is also fine, the only downside being having to backtrack when completing the multi-cache.
The container is not at the posted co-ordinates.
On one of the nearby poles you will see three numbers ABC in white circles under the letters DP.
The cache is just a short walk away, located at
N53 0B.(B-A-1)(B-C)A W001 31.(B/4)([A-C]/2)(A-C+1)