My weekend and holiday job in the early 70s was for Tesco. Either on the meat deli counter or the checkout. People ate well. I worked flat out all day.
A normal shop would be bacon weighed and wrapped. Say six rashers of collar bacon and a dozen rashers of streaky. Black pudding rings, dozen eggs, eight sausages, that was weekend breakfast.
Then at the other end of the counter, you'd buy brawn, ham, faggots,. A nice wedge of cheddar, Lancashire , Wensleydale cut with a wire gadget. Gala pie, four slices. cream cheese scooped into a cardboard pot with a lid and weighed Ditto Coleslaw, Russian salad, potato salad.
I'd go on the tills at relief time, rolling lunches.
Trolleys piled high, bread either white or hovis four loaves minimum. Lots of apples and bananas. Plenty of potatoes, cabbage, carrots,
Stewing steak, mince, braising steak, breast and neck of lamb, brisket, joint of pork
Lots of jams and marmalades, tinned fruit. Blancmange, packets of jelly.
But rents were low, mortgages and energy reasonable, council tax steady. One car per family.