I remember my kid brother and I, back in the fifties, pushing our sister's pram up Gorsey Lane for a bag of coke, not the stuff that Nigela's a fan of, the stuff that was cheaper than coal but didn't last as long. I forget how much our mam used to trust us with, but it couldn't have been very much.
Once we had the bag on the pram we'd push it over the dock-estate, sometimes shoving it along in between the railway tracks whilst pretending it was a train. Life was tough but simple then. Still...it never did us any harm.