This is a short offset multi. There is free limited parking available.
To find the cache, you will need to collect the (lower case) values for a, b, c and d.
The values can be found from the Post box number : HAa bcdD
The cache is located a short walk away at : N51 35.(a-b-d) (a*(b+d)) W000 24.(((a+c)*d*c)+1)*(a+b+d)
You are looking for a magnetic container smaller than a film canister.
The road along here is quite busy so you may wish to use the zebra crossing adjacent to the Fine Pair to cross the road before heading to GZ.
FTF congratulations to lalair
The Fine Pair series was originally started by wizardsmum.
If anybody would like to place 'A Fine Pair' of their own please do, I would just ask that you let mattd2k at firstname.lastname@example.org know first so he can keep track of the numbers and locations to avoid duplication.
He also keeps a public Bookmark List of this series so once your cache is published please contact him via his profile page to have yours added.