The cache is not at the abouve coordinates. To find the cache you must work out the cache coordinates by solving the puzzle below.
THE PUZZLE
Find the birth dates of the following royals and fill in the gaps:
Prince George of Cambridge July AA of ABCD
Prince William of Wales, Duke of Cambridge June AC of CEFA
Prince Henry of Wales September CG of CEFH
Substitute in the values to find the co-ordinates:
N GC° C(G+C).B(F-C)D
W (c-c)(d-d)(a-a)° g(f-f).HCE
You can check your answers for this puzzle on GeoChecker.com.
Good luck finding the cache!