"The treasure is easy to find as long as you can locate
Tweedledee, the more reclusive of the twins. Finding him is not so
easy though. You have to find Tweedledum first, but even he does
not really know. All he can tell you is where you can find a clue
to locate Tweedledee. Stay up high when on route to the clue: it
may be longer, but it is certainly easier. The clue is a little
vague however - you won't be able to use any of these fancy new
gadgets as Tweedledee lurks out of sight away from people.
Keep to the paths and be sure you wear stout walking
boots when searching for Tweedledee as there may be perils.
Once you find Tweedledee however things get a bit easier. The
treasure is not here, I have heard it say, but a short walk
downhill; there you will come out at the bottom. There is a rock
face and the treasure is hidden near it's base a short distance
away - so it is! I suggest you park at the cache coordinates"
Go to Tweedledum
Warning, this cache passes near a place known for being an
area where men "gather" in the evenings. It is safe and free from
debris. If you have concerns about this I suggest you make sure you
have people with you when you do the cache. More is about this is
on the UK forum page - Ghostbusters