A straight forward multi with a nice walk along the bank of the Royal Military Canal.
At the published co-ordinates you will find a gate post with two footpath marker discs - a red one on one side and yellow one on the other.
Collect the following information from those discs:
A = Number of times the letter W appears on the red disc
B = Number of letters in the longest word on the yellow disc
C = Number of nails in the red disc minus the number of nails in the yellow disc
D = Number of times the letter K appears on the yellow disc
E = Number of words in total on the red disc (if you see a word more than once then count it more than once!)
F = Number of arrows on the yellow disc
The cache can be found at: N51 03.ABC E000 51.DEF