Gerard Austin O'Callaghan

H&J Martin Ltd. provides construction and property management services. The company was founded by Henry Martin in 1840 and is headquartered in Belfast, the United Kingdom.

Part of Lagan Specialist Contracting Group Holdings Ltd., H&J Martin Holdings Ltd. is a 3rd generation private family business founded in 2013. The company is based in Belfast, UK. The British company has over 55 years of experience working in a diverse range of areas including Civil Engineering, Construction, Aviation Infrastructure, Piling, Plant Hire, M & E, Fit Out, Operations & Maintenance, Asset Management, Housebuilding and developments.

Part of Lagan Construction Group Holdings Ltd., Lagan Construction Group Ltd. is a holding British company that oversees subsidiaries involved in the construction of roads and civil engineering projects. The company is based in Belfast, UK and was founded in 2011.

Founded in 2011, Lagan Building Contractors Ltd. is a subsidiary of Lagan Construction Group Holdings Ltd. that provides building construction contracting services. The company is based in Belfast, UK.

Part of Lagan Specialist Contracting Group Holdings Ltd., Lagan Operations & Maintenance Ltd. operates and maintains roads, highways, and buildings, as well as supplies building materials. The company is based in Belfast, UK and was founded in 2001.

Part of Lagan Specialist Contracting Group Holdings Ltd., Lagan Operations & Maintenance Holdings Ltd. operates as a holding British company with interest in operating and maintenance of roads, highways and buildings. The company is based in Belfast, UK. Lagan Operations & Maintenance Holdings was founded in 2013.

Founded in 1973, Diamond Corrugated Cases Ltd. is a manufacturer of packaging materials. Part of Pennyburn Industries Ltd., the company is based in Derry, UK.

Charles Brand Ltd. is a British civil engineering company that constructs civil engineering projects. The private company is based in Belfast, UK. The company was founded in 1989.

Part of Lagan Construction Group Holdings Ltd., H & J Martin Construction Ltd. is a British company that provides civil engineering, building, pilling, plant hire, infrastructure investment facilities management, and maintenance services. The company is based in Belfast, UK. Founded in 1987.