This was a very enjoyable puzzle. It actually only took me part of my lunch hour to solve (great song - I often listen to it on the way to work). That was about 4 months ago, the resulting co-ordinates filled me with dread and I put it on the to-do-when-I-get-GPS pile.
Today I thought I'd give it a go. I spent about 45 minutes failing dismally. I concentrated on a couple of a likely places that both turned out to be wrong. One of them was so obviously covered with stickoflage that I was convinced it was the right place but must have been muggled. Looking through the logs now it was probably where GeorgeVeys had been doing his digging.
I finally gave up and resorted to using my borrowed GPS. That took me to a likely place and I found the cache in a couple of minutes.
Left Travelling Beaver and took T&J Bear
Now here's a coincidence. I got back home and a geocaching friend rang to tell me that there's loads of puzzle caches on the North Downs - he said there's even one called Kiss My Irish Behind. Yes I said I've just done it.