The cache IS NOT at the listed coordinates.
Continuing the series started by Jesmond Lynam who has kindly allowed me to contribute.
The following are all notable english figures from the 17th, 18th and 19th century that can be identified by the clues to their achievements. What connects them?
In no particular order:
A. A law maker with his feet firmly on the ground.
B. A hopeful composer who can always be found on the promenade.
C. An engineer with connections. Reg knows him.
D. A pioneer, a ministering angel and namesake. Could you hold a light to her?
E. A manufacturer and lunartick, hard pressed to be head over heals and rarely copied.
F. The name of the establishment that connects them.
Once you've identified the figures and the connection, you will be easily able to assign a number associated to each of them. Use those numbers to complete the sums whose answers complete the final coordinates to the cache.
G. The number associated with figure A
H. The number associated with figure B
I. The number associated with figure C
J. The number associated with figure D
K. The number associated with figure E
L. The number of letters in the name of the establishment that connects all five figures (Three words)
Cache can be found at: N54 59.X W001 36.Y
Where X = (K x L) + ((I +J) x H) - (I -G) and Y = ((I x I) x L) + (H x I) - (K - G)

You can validate your puzzle solution with certitude.
The rest of the series can be found by clicking on this link to the Only Connect bookmark list.