This cache is a magnetic nano and is NOT located at the above co-ordinates, which are for the middle of a football pitch.
Assume N 51 21 and W 000 44, and the cache can be found by solving ...
ARSENAL - 3
TOTTENHAM - 9
Please don't leave any additional clues (subtle or otherwise) in your log.
Stealth is required, so please be discreet. And please replace the cache, so that it is not visible to anyone passing by.
You can check your answers for this puzzle on Geochecker.com.