The listed co-ordinates are not for the location of the cache but for the Jolly Boatman Pub which I recommend visiting for a pint of Boaters Tipple while you are in the area.
The image below shows the true co-ordinates for the cache all you need to do is substitute in the following numbers for the letters: A = 9, B = 2, C = 6, D = 8, E = 1 and F = 0.
Have fun.
