Yard Supervisor Huws Gray Welwyn Garden City - Lead From the Front and Help Your Team Thrive Be Part of Something Bigger at Huws Gray. Whether you're in the trade or simply love a good home improvement project, chances are you've heard of us. We're the Huws Gray Group home to a family of trusted brands including Huws Gray, Huws Gray Plant & Tool Hire, Civils & Lintels, The Timber Group, PDM, N... WKCL1_UKTJ