James Frew Ltd ( James Frew ) is one of the largest privately-owned building service companies in Scotland , providing integrated property solutions in plumbing , gas maintenance , mechanical services , heating , electrical installations , and property upgrades for both public and private sector clients . With more than a century of experience , the business is wellequipped to deliver integrated property solutions for the social housing , new build construction , health care and education sectors , as well as a B2C offering , its award-winning Home Plans by GasSure product . Having gained a reputation for excellence , James Frew also delivers social housing modernisation projects , alterations to schools , and mechanical and plumbing work on new build housing .