DS-03Do your safety checks before drillingCables and pipes can run almost anywhere, even in solid brick or block, so sweep the area with a detector first. Still treat the wall as if something's there — cheap detectors miss deep cables, conduit, and cables behind metal-backed plasterboard. Find your stopcock (usually under the kitchen sink) and check it turns, so you can shut the water off fast if you hit a pipe. If you're at all unsure, isolate the relevant circuit at the consumer unit and turn the water off at the stopcock before you drill.