Extremes:
Most Northerly cache:  N 54° 53.488, SideTracked-GRIM in Carlisle! GC40V11
Most Southerly cache:  N 50° 26.798, Side Tracked - Liskeard GC1W15X
Most Easterly cache:  E 0° 31.260, SideTracked - Chatham (CTM) GC3CX53
Most Westerly cache:  W 4° 28.122, Side Tracked - Liskeard GC1W15X

Do wish people would abide by the CORRECT naming convention! SideTracked