Sheffield's Heating Experts A Gregory Plumbing & Heating is a family business which has been established in Sheffield for over 27 years. Our fully qualified plumbers and Gas Safe engineers provide a wide range of plumbing services and heating services within Sheffield and the surrounding areas. With our wealth of knowledge and skills, we are happy to undertake any sized plumbing and heating job, from a leaking tap to complete central heating design and installation, we provide free quotations for any of our services.