Sneaky Machiavellian Scheme - Winter Geolympix '18 Mystery Cache

A simple? Puzzle Cache set for the 2018 Winter Geolympix with permission from the National Trust. It is NOT at the given co-ords, although it is within a mile or 1.6Km of them.

There are several ways to find this cache:

Method 1: Assume N51° 48.' W000° 35.' and use this text to discover the key information you need. Decode it successfully and it'll take you - right on the button - to the cache: JAM FOB

Method 2: Following a similar methodology to Method 1, just head to:
N51° 48 . Jackal Abduct Minor '
W000° 35 . Defence Mango Abscess '

Method 3: Following a similar methodology to Methods 1 and 2, go to:
N51° 48 . Just Keep Low And Believable Co-ords Might Now Occur '
W000° 35 . Desire Enough, For Motivated Novices Often Achieve Blatant Caching '

Good luck!