The geocacache is not at the published co-ordinates.
You'll need to understand some other lingo and work out the co-ordinates for the final cache.
Dabbers at the ready, here we go:
Man alive , Cup of tea, Snakes alive, One score - 20, Kelly's eye, Garden gate
One little duck, Heinz varieties, Knock at the door, Doctor’s orders, Kelly's Eye
Parking is available at GZ.