I have not had a chance to visit yet but as far as I can work out from a rough map published in a local report its probably in the Bownham park estate opposite the Bear Hotel .
Multi map link http://www.multimap.com/map/browse.cgi?client=public&db=pc&addr1=&client=public&addr2=&advanced=&addr3=&pc=GL55DE&quicksearch=gl5+5de&cidr_client=none
Happy hunting.