Yeah maybe, it feels a bit teenage though and basics white wine is still quite honest I think, I mean who would you be kidding? You should be able to find regular cheap plonk for about £3.00 anyway. That is one thing that makes the UK culturally backward in relation to the rest of W.Europe in that basic wine in Spain / France / Italy can still be very enjoyable.
Well you can actually get a drinkable bottle of wine in France for a couple of euros - a sight more drinkable than what £2.50 would buy you in a UK supermarket (though I'm surmising here - maybe I'll pick one up next time I go to Sainsbury - though I can't promise I won't look round first to make sure no-one who knows me is in the shop). Even with the crashing pound, wine and in fact most kinds of booze are significantly cheaper in the wine-producing countries you named than they are in Britain, where alcohol is a Social Evil and a Scourge Of Our Times and therefore has to be taxxxed to at least ameliorate the spiritual, if not hepatological, sin of drinking. Not that a hell of a lot of people in this country don't drink themselves half to death every weekend, of course.
More booze taxes on the way if the Tories get in, and probably even if they don't. Though from what I've heard it would affect mainly the really strong/cheap lagers, ciders and alcopops, which is certainly better than an indiscriminate hike. In fact I'd be happy with a rise in the price of off-licence beer as long as there was also a drop in (or at a least freeze on) the duty paid by licenced bars, I mean pubs are shutting down left right and centre, two within a short walk of my house in just the last couple of weeks.

They weren't pubs that I went to, but they were someone's local, you know? To say nothing of someone's livelihood.
I can guarantee someone somewhere will see a tax hike on WKD as terribly elitist and anti-working class...
Edit: bugger, we're meant to be talking about fish, aren't we? If mackerel is still plentiful and not full of mercury and Nazis then that's groovy by me. Smoked mackerel with black peppercorns is the shizzle.
Edit edit: the Londoners among us will no doubt be aware of the advertising blitz the Times is splashing out on at the moment, centering mainly around the idea that they're, like, totally with-it and hip to everything that's new and current and An Issue. The ad for their new science/medicine/nature mag says "The world's seafood will run out by 2041". That doesn't make me want to read the Times, it just makes really sad.