This cache is placed as a tribute to one of my favourite musicians of the seventies who grew up in this location.
He had the dubious honour of having more records banned by the BBC than any other artist, but in spite (or maybe because) of this still sold several million albums.
The cache is not at the posted coordinates but if you go there you will see a clue to help you solve the puzzle.
You are looking for ABCDE FGHJK
the final cache can be found at:
N51 J(A-1).(K-2)(C-K)(G/2)
E0 (F-2)E.(H+K)(C+1)(D-2)