Question Author
To add to the list: Value vegetables, 100g chocolate bars, biscuits, fruit n fibre cereal, skimmed milk, soya milk, photocopying paper, grated cheese, wholemeal breadfrozen vegetables/peas, baked beans, frozen chips, kitchen paper, duvets, kettle, toaster...
Items that having tried I would not recommend: foil (too flimsy), sausages, diced beef (tough even after considerable cooking time), burgers, nuggets etc, mixed fruit jam, long grain rice (tried Tesco's value long grain, was all broken bits, awful gunky stuff once cooked. Avoid)
eggs (caged hens)...I'm sure I can think of more.
Generally, I would say that Sainsbury's offers the best quality when it comes to their value range.