One of a growing series of puzzle caches with the common theme being that they all offer a direct line of sight view of Stokenchurch Tower. The first four puzzles were very simple with the aim of making them solvable by children. The fifth upped the difficulty quite substantially. This one's easier but perhaps secondary/upper school level rather than primary.
The Puzzle
then the cache can be found at:
N51 40.ABC W0 54.DEF
You can check your solution at:
Congratulations to Davies27fun for the FTF.
Chmmyr: Qb gur znguf. Pnpur: Gbc bs cbfg.