During the war (WWII) Britain had no choice but to turn all land to agricultual use, public parks, air feilds, gardens, paddocks, etc. With a population of 48m we had severe rationing of most food stuffs, which lasted several years after the war. Anyone with their own land grew what food they could.I have quickly come to learn how dependent we are in the UK on imported goods
Now with 61m people and one of the highest density populations in the world there is no way we could grow all our own food even if we did the same and made it a matter of law that everyone had to grow food we could not sustain the population.
It is crazy that more people don't grow their own food, not only do they add to global warming to import their food, but most people do not know anything about growing veg or raising meat, which is quite simply wrong.
My point is that we in Britain cannot expect to live purely off of home grown food, true, some of us can make that choice but on a whole the nation cannot. I don't think we should feel bad about buying bananas, mangos, sugar, oranges and beans from abroad, they grow better there for starters and since we cannot grow all our food stuffs here we should encourage fairtrade and organic growing methods abroad.