Chips & gravy would have been a filling, and more importantly, cheap meal for a mill worker in the North. Rock salmon definitely Southern, a sweet fish with soft backbone but no other bones, which we liked. Many years ago when we had moved North, I was still working and Fleetwood still had a few fishing boats, sometimes I would go on the docks and buy fresh fish and remember getting some dogfish one time. The chap I bought it from said it was all going to London as there was In the 60's Maidstone had a really big market, just over the bridge, going N, on the LH side by the river. All sorts from live animals to garden plants were available at really good prices. You could buy a " hand" of bananas, straight out of the orange wood box for half a crown (2/6 or 12.5p nowadays).