About us

Graham The Plumbers Merchant was founded in 1936 in Glasgow as builders merchant Thomas Graham & Son. Today, we pride ourselves on supplying the trade and public with innovative plumbing, heating, bathroom, and smart technology solutions, with our commercial project team being on hand for those larger projects.

Our Valued Customers

We feel that the relationship we have with our customers is the most valuable part of our business. Graham staff use their exceptional industry and product knowledge to give all of our customers a great experience with us, whether you are visiting regularly or just undergoing a one-off DIY project, our team go above and beyond to exceed your expectations.

To help up deliver this service to our valued customers, our family operational structure empowers our branches, giving them the freedom to use their initiative to provide a more personal, responsive and tailored service to their individual local area. This is because customers need to rely on a merchant that knows their local area well and that can offer immediate and easy access to a wide range of plumbing, heating and renewable products.

We also think it is important for customers to be kept in the loop from all the news and updates from Graham. Channel Graham gives our plumbers, heating engineers, bathroom installers and everyone in between one-click access to all of our product and company news, how-to videos and industry advice, to keep you up to date.

Our Exclusive brands

Graham customers also have access to their own exclusive ranges. Our Altech brand offers copper fittings, shower pumps, radiators, and heating controls, whilst the Alterna brand provides a wide range of bathroom products including taps, bathrooms suites, shower enclosure and much more.  Both brands offer high-quality products for great value for money.

Our Industry-Leading Innovation

Here at Graham, we embrace new opportunities and bring in new initiatives to keep our customers happy and add value to our services.

That is why we developed our industry-leading Always Available range which is made up of a selection of core products that will always be in stock for customers, either by already being in branch or available the next day, to ensure our customers can get what they need for the job, every time.

We also offer streamlined e-account management, enabling customers to view their transaction history, account details, and current balance online, with the ability to view and print copy documents. This is complemented by electronic invoicing, a suite of services that allows users to view, download and store current invoices from any location and even allow secure access to 3rd parties, such as an accountant.

We place great value on those who are new to the industry, from students to apprentices, and we were the first national plumbers’ merchant to develop a scheme to focus on these future installers. Our Turning Pro initiative is free to join and gives those just starting out access to a wide range of offers and benefits to help kick start their career in the plumbing industry.


Graham is part of the Saint-Gobain Group. Saint-Gobain designs, manufactures and distributes materials and solutions, which are key ingredients in the wellbeing of each of us and the future of all. They can be found everywhere in our living places and our daily life: in buildings, transportation, infrastructure and in many industrial applications. They provide comfort, performance, and safety while addressing the challenges of sustainable construction, resource efficiency, and climate change.

We firmly believe that a good living and working environment has a great impact on how we feel and our productivity. The Multicomfort approach has been developed to encourage us to think about the surroundings in which we live and work and how we can get the best out of it. Together Saint-Gobain can provide you with all of the tools and materials need for any renovation, building or refurbishment project.