The cache is not at the posted coordintes.
The cache can be found with some knowledge of triangles.
Final location is: N 52° 00.abc E 001° 07.def
Where abc and def can be calculated from the diagrams (they are not to scale).
The diagrams are of right angle triangles and you should calculate to the nearest whole number. Once you map the coordinates you will see a scalene triangle and the host is an equilateral triangle.
