People from London really did go on holiday to Walton on the Naze.

Horrible place on the Essex coast and only about an hour up the A12, but people would take their caravans and stay for a fortnight. One of my many uncles had a caravan up there and when I was very young, we went to stay in it. One morning, a small caravan two along from ours seemed to be rocking up and down of its own accord. It wasn’t even windy but this caravan was jigging about so enthusiastically that I was convinced it was going to break loose and roll into the sea. I asked my dad why it was rocking like that but he said nothing and just led me away. It was only when this record came out many years later that I suddenly remembered that caravan and what its occupants must have been doing.