Fantastic cache! pacifist049 and I took a look this morning as we happened to be in Preston. A match was due to start this afternoon so we wanted to make sure we were done before then! It took us quite a bit of puzzling to work out what we needed to do, and where, and a few failures in the co-ordinate calculation initially suggested that we were looking for a cache about 8 kilometres away!
Eventually though, we prevailed: once we knew where we were headed it was easy – and the clue makes perfect sense once you’re in the right area! Thanks again for an amazing cache; my first of 2011!