UK homeowners urged to locate and test stopcocks before winter to prevent costly frozen pipe damage.

Martin Lewis is urging UK homeowners to locate their stopcock before winter to prevent costly damage from burst frozen pipes, which average £9,000 in repairs. He stresses the importance of knowing the stopcock’s location—often under kitchen sinks or outside—and testing it regularly to prevent seizing. Experts recommend turning it slowly clockwise, avoiding full opening, and insulating outdoor taps. If stuck, do not force it; contact a plumber. Some suggest installing a Surestop device for instant shutoff. Proactive preparation is key to avoiding major water damage during cold weather.