The location given is a good parking spot for access to the cache and both parking and the cache are wheelchair accessible.
To find this cache you simply have to find the function F(n) from the information on this page and then use it to find the value of the letters below.
The cache is quite close.
N53 A.B W2 C.D
A = T(11) +1
B = T(156)+2
C = T(3) -2
D = T(28)
After the FTF has gone please contact me for a nudge, but don't expect too much.
Checksum = 45
After a few complaints about the final being a little out, Iv'e updated the functions for B and D. The cache is on the same place.