Hi Shootingmad
Nearest code we know of is BN7 3NE, which is for the Wyvale Garden Centre about 3-400 yards NORTH of the turning in to our farm track - signposted FISHING LAKES.
I stuck a map on the announcement thread - HERE
Note the message regarding road closure in Kingston Village, which is the way an untutored satnav will most likely take you.
atb
Biggles