The cache is not hidden at the given co-ords. You need to collect info from the seven locations en route to find it.
You are standing outside a shop with telephone no 6A2133.
Go to stage 2 where the date of the crown is 179B.
Go to stage 3 where the year on the sundial is 17C6.
Go to stage 4 where the year on the board is 176D.
Go to stage 5 where you need to count the butterflies on the sign - E.
Go to stage 6 where you need to count the hanging baskets - F.
Go to stage 7 where the year the cross was removed was 180G.
The cache is hidden at N 54 58.(A+C)BE W 002 01.DAG.
Enjoy the walk - but not too much!