Ray, I must confess, iv'e seen piles and piles of the same product or other products in the store rooms in his various restaurants, but had never thought to see what they were. Mind you, it's highly unlikely that anyone would really want to cook chip shop fish n chips at home, as half the reason you have them is because you can't be bothered to cook.
Chris, a good beer batter is delicious, I much prefer a good homemade batter to chip shop batter. I tend to use bottled ale's as the fizz helps to lighten the batter. I also add onion seeds too.