To find this micro cache, you'll need to own, see, find or otherwise have information from an Aluminium Alpha Numeric Disc (aka AAND), the colour of which there is a clue to on this page. The cache is hidden at N51° 4G.EHB W 000° 5H.AJJ.
Alternative finding method, as required by Groundspeak:
(This is a lot less fun than tracking down one of the hundreds of this colour item released into UK caches and at events in the summer of 2012, but as a last resort..!)
"Yes" "No" "Yes" "No" "Yes Yes Yes!" "No No No!" "Yes Yes Yes!" "NO" "Yes Yes Yes" "No" "Yes Yes YES!" "Damn" "Yes?" "No" "Yes!" "No" "Yes" "NO" "Yes" "No No NO" "Yes" "No no no" "Yes" "No" "YES!" "No" "Yes" "No No!" "Heck" "Yes yes yes" "No" "YES YES YES" "NO NO NO!" "YES YES YES" "No" "Yes?" "No" "Yes?" "No" "Yes yes yes!" "Aggh! No No!" "YES" "NO" "Yes" "No" "yes?" "NO NO NO NO NO!" "Yes." "No." "Yes." "No." "Yep" "Nah" "Yes" "No" "Yes!" "Heck! No. No!" "Yes" "No" "Yes yes yes" "No" "Yes. Period!" "No" "Yes YES YES!" "No" "Yes YES YES!" "No" "YES YES YES!" "You win." Later: "Yes Yes Yes" "No" "Yes YES Yes" "No NO no" "Yes" "No" "Yes" "No!" "Yes YES YES!" "Nope" "YES YES YES!" "Hell!" "Yes" "No NO NO!" "Yes" "No" "Yes" "NO NO NO" "Yes?" "No." "Yes?" "NO. No. No." "Yes" "No" "Yes" "No No No!" "Yes" "NO NO NO" "YES!" "Damn." "Yes Yes Yes" "No" "Yes" "No" "YES!" "No! No! NO!" "Yes YES YES!" "Nope" "Yep Yep Yep!" "Nah" "Yeah Yeah Yeah!" "Idiot. No. No." "Yes" "No." "Yes?" "No" "Yes" "NO NO NO NO NO!" "Yeah" "No" "Yes." "No no no" "Yep" "No No!" "Struth!" "Yes yes yes" "Nah" "YES YES YES!" "Nope" "Yes. Full stop." "No no no." "Yes!" "No" "Yes Yes Yes" "No" "YES YES YES!" "Ok"
Assume N51 and W000 with the above. Good luck!