AB-04Check for cables and pipes before you drill anythingCables and pipes can run almost anywhere in a wall, not just in the usual safe zones, so treat every marked point as live until you've proved otherwise. Use a cable and pipe detector along the whole line, but don't trust it completely - it can miss cables that are deep, in metal conduit, behind metal-backed plasterboard, or confused by a metal stud frame. Find your stopcock now, usually under the kitchen sink, and check it turns, so you can shut off the water fast if you hit a pipe. If you have any doubt at all, isolate the circuit at the consumer unit before drilling, and turn off the water at the stopcock before cutting into anything that could carry water.