Dial-a-Plumb operates from Mickleover in Derby (DE3) . Dial a Plumb can carry out a wide range of plumbing and heating services. No job is too small. Every customer is important to Dial a Plumb. We are a family run business. Members of Derbyshire Trading Standards. TRUSTED TRADERS. Gold Card DISCOUNT. No call out charge. Dial a Plumb will be the company you can rely on now and in the future. Members of GAS SAFE for all Gas work. Servicing / Installation.