Guppy nods to him, and once Will's given his name the other eight or so people in the circle follow suit.

Guppy then explains what the group is about, just in case anyone didn't read the posters, and invites anyone to begin.

There is a momentary awkward silence, then a woman in her thirties, who gave the name of Jackie, glances up and shyly begins.

"Every night at half ten a tramp lies down on my doorstep and won't go away until half eight the next morning. I've tried calling the police but he just keeps coming back. My children are scared and guests won't come any more."