People are allowed to have opinions about quality of food, it isn't whinging. In fact lancslass provided reasons why she didn't like the takeaways to back up her assertion. Also, people are allowed to crave food from home and bring it to their new countries -- that's how cuisines spread across the world and why places like Glasgow have fantastic Indians and Italians. There are tons of examples of this. I'm not suggesting British fish and chips is a high end dining experience, but it seems that there are many poms who are fed up with frozen chips and want the real taste of chips from home.
Also we are allowed to be patriotic and nostalgic about our home country and its food, just because we have settled in a new county doesn't mean we have to settle for takeaway food which doesn't meet our expectations.
And finally no idea what you are on about with the spuds. We have easily managed to source potatoes and just to correct you on a point of fact, our cod and haddock will be from the North Atlantic and not substituted by any other fish. I suggest that if you want to whinge about the shark/cod/flake that you have been eating you lodge a complaint with your current local takeaway. If you want real cod, haddock and chips, you know where to come.