Hey this is nothing more than the price acting, of course halal meat and pork is cheaper than cattle meat. Of course people will usually go for the cheaper option, even if its dirtier, and there's where the economy changes pure british culture, but the consume of what is part of tradition will continue. Also the space isn't really that important since most of what the gross chinese consume is imported, look at how much soy they buy from Brazil and how much meat they import