Mum and sister Susan discuss the weekly shopping, St.Helens supermarket, late 1970s. Cup-a-Soup is 40.5p (the half pence was always written very small on the card so on first look the price seemed to be 40p.) I seem to remember wearing my school uniform when I took this so it may have been after school.
Photographing in the supermarket was as easy as photographing in the school, as long as you did not ask permission it was no problem. It helped that in the 1970s people were a little less hung up on rules, one of the nicer (and also sinister) aspects of the period.