I'm wondering if anyone can give me some advice please? My nextdoor neighbours are having a new gas central hearing system fitted (they are tenants, landlord is responsible for the work). With the old heating system there was one narrow gas pipe attached to their house, but over my driveway, which I was not particularly happy about as I was not sure this was safe. I arrived home yesterday to find a flue had been installed high up over my driveway. Also the gas pipe had been extended to protrude further onto my driveway plus some sort of lagged piping. All of this looks to be of a poor standard of workmanship and looks tatty. Also the pipes will be in the way of a gate post for gates i am having installed accross the driveway. This all seems really out of order, what can I do?