The cache is not at the above coordinates. Please bring a pen.
The cache can be found by solving the puzzle below. North 53 43. ABC West 001 57. DEF.
A = George Canning.
B = Spencer Compton, 1st Earl of Wilmington.
C = Henry Pelham.
D = Frederick North, Lord North
E = George Canning
F = Spencer Percival

You can validate your puzzle solution with certitude.