Yesterday afternoon, Bellenden area, (30/7/15) doorbell rang and man with clipboard started (i think) to talk about 'engineering work in the area' - and when i responded with the usual 'we've done all work we want to do'produced a clip board and said he'd been called out to repair my boiler. He had our address but different name and phone number on slip board. We are so used to random callers, i am assuming it was scam to gain entry into house should off school teens or confused elderly answer door. On the other hand it could be genuine mistake, though i felt he was working very hard to amicably present far too much information ('oh isn't this a council house then?') and wasn't that interested in my suggestion of ringing the number on his clipboard (all hand-written)to find the real boiler customer. White, male, middle aged, cheeky chappy. I am sure my yawning dopey seventeen year old would have given him full unsupervised range of the kitchen, so a heads up to let em know only to let in the expected!