I was one of a group of teenagers who camped in people's gardens in the mid 70's.
After the pub had closed we would quietly make our way to the garden of a friend who was not with us and pitch tents on the lawn in the expectation of a warm welcome and a hearty breakfast in the morning from the surprised householder.
It worked. Sometimes.
We called ourselves the Tenting In Town Society. Only lasted a few weeks one summer.
