Yes at a school or college if you read Just William or Billie or Bessie Bunter books they mention them in there.
A lot of school now do not have them but in my day most did unless they got broken into and money and stock stolen which ended ours in the end.
We had chocolate bars, chocolate biscuits (cookies) and wafers, crisps (potato chips) my favourite was beef flavour.
At junior school they used to sell jammie dodgers wonderful shortcake biscuits with raspberry jam (jelly) filling