Parking is possible (just) on the road near Ifield and also near cache 12. However the best spot is on the road to Nash Street in the vicinity of cache 1. The walk can be started at any point, but should be completed in a clockwise direction for a number of reasons, not least that the multis work that way.
At the coordinates is a yellow sign. At the bottom are three words indicating who placed the sign. Number of letters in the three words equals A, B, C.
The cache can be found at N51 23.AC3 E000 22.(A-2)1(B-3).