30ml tube
The cache is NOT at the published coordinates, and there is no need to visit unless you want to physically see this 'diet' pair.
I posted this photo on a social media geocaching group a few weeks ago, outlining the 'diet' version of the popular nationwide series 'A Fine Pair', details about which can found here.
A helpful person commented and highlighted the fact that the phone box is actually a rare BT Booth 7A (or 'Oakham' booths, as they later became known, due to their resemblance to an Oak Ham tin). They were set up in areas where a traditional K6 (or similar) phone box wouldn't fit, or in areas which had a high rate of vandalism. If you're interested in learning a bit more about them, you can visit here.
The puzzle:
Consider:
Norfolk - AABB
Lanarkshire - CDB
You should have four numbers - ABCD
N52 A(C-B).A(A+B)(C-A)
W000 D(B+B).(A+B)(B+B)(A+C)
