David Conor O'Neill

McLaughlin & Harvey Ltd. provides engineering services. The private company is based in Mallusk, UK. and has subsidiaries in United Kingdom. The CEO of the British company is William Francis Philip Cheevers.

McLaughlin & Harvey Construction Ltd. is a family-run building and civil engineering business that has been providing a full construction service for over 169 years. The private company operates throughout the UK and Ireland, with head offices located in Belfast and Glasgow. The British company specializes in construction, interior fit-out, commercial furniture services, specialist joinery, and facilities management. The company has expertise in various sectors including healthcare, education, industrial, retail, sports venues, transport infrastructure, environmental, marine, commercial, residential, and leisure. McLaughlin & Harvey is committed to delivering high-quality, innovative, and cost-effective construction projects within a safe and considerate working environment. The company was founded in 1994 and has subsidiaries in the United Kingdom.

Part of McLaughlin & Harvey Construction Ltd., Barr Environmental Ltd. is a hazardous waste disposal service provider. The company was founded in 1996 and is based in Cumnock, UK. Barr specializes in dealing with hazardous materials such as asbestos, Japanese knotweed, used oil, and waste electrical equipment. The British company operates a variety of high-quality waste treatment, recycling, and residual disposal facilities throughout the UK. Barr Environmental also accepts wood, metals, and glass for recycling into new materials from centers across the country.

Trench Holdings Ltd. is a British company that offers building, civil engineering, and waste management services. The private company was founded in 2007 and is based in Mallusk, UK.

Part of McLaughlin & Harvey Ltd., Interactive (Ireland) Ltd. is a British company that wholesales fast moving consumer products. The company is based in Newtownabbey, UK. Interactive (Ireland was founded in 2002.

Part of McLaughlin & Harvey Ltd., Caelum Ltd. is a real estate leasing company based in Newtownabbey, UK. Founded in 2015, the British company's main focus is on leasing real estate properties.

Grange Ltd. is a British company that leases and operates real estate properties. The private company is based in Newtownabbey, UK. The company was founded in 1996.