As a long-established domestic mechanical and electrical sub-contractor John N Dunn Group Ltd provides sub-contract plumbing, heating, electrical, security systems and renewable energies services to the construction industry, including contracting services for property developers, housing associations, ALMO's and RSLs (specialising in 'decent homes' refurbishments) and M&E installations for commerical, industrial, retail and leisure businesses throughout the North of England and Scotland.