In the spirit of your concessions above, I will say that among the best fish and chips I have eaten are the serve I had from Anstruther Fish Bar. Wow!
Truly though, in two years living in and travelling around Britain, I had very few fish and chip experiences that impressed me. The chips in Britain, as you correctly point out, are spectacular. The fish, though, tends to be too heavily battered for my tastes and retains too much oil, leaving you with a mouthful of grease.
Aussie battered fish + British chips + a cold pint of an American IPA = heaven!