Question Author
Thank you for your answers, especially your links Pinky, this is exactly what I have had in the past from callers. The worrying thing is that I do live in a lane, which is quite deserted and houses set fairly way back from each other. Also there are a lot of elderly people living in this lane, and it is very much off the main road. So it is odd for people to be walking up and down it in the dark, knocking on doors. Maybe I will contact the police - not sure how interested they will be tho !