AP-02Check for pipes and cables before you drillRun a cable and pipe detector over every spot you plan to drill. Detectors miss things too — deep cables, metal conduit, or wiring outside the usual safe zones near sockets and switches — so still drill carefully and stop the moment you feel resistance or see dust colour change. Find your stopcock now (usually under the kitchen sink) and check it turns, so you can shut the water off fast if you hit a pipe. If you have any doubt about what's behind the wall, isolate the relevant circuit at the consumer unit before you drill.