Welcome to S J & P M Smithson, we are a well renowned, highly qualified and experienced plumbing business in Dereham. We’re the perfect plumbers company for Dereham-based commercial and domestic troubles, heating, installation and repair services. Whether you’re encountering problems on a domestic level, or you're in charge of overseeing office fixes, S J & P M Smithson offers a personal touch in an impersonal world.