It is also the fifth year in a row that the chain has experienced a severe loss in profits:
It's probably because American chains such as Whole Foods and Costco are expanding their locations throughout England.
I doubt it. Their expansion is minor.
It's more to do with the growing marketing and expansion of other British Supermarkets like Morrisons, Co-Op, Waitrose and even Sainsbury's and Asda (although Asda was bought by Walmart).
But even more important is the growth of 'lower-class' supermarkets like Aldi and Lidl, which both boast much lower prices without a great drop in quality.
If Tesco is losing to American companies it is mostly in America, where Tesco attempted to expand into but were just crushed by the existing chains.