Ronald Sutherland Macdonald

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 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.