Robert McNaughton

Hillhouse Quarry Group Ltd. is a modern heavy building materials business supplying drystone, coated stone and concrete products to meet customer demands in a cost effective and safe manner. Hillhouse is different from the large multinational building materials companies in that it is a privately owned business that can meet the expectations of the largest customer but also remains a local business that services the needs of local companies and private individuals. Hillhouse Quarry has been producing crushed aggregate since 1907, remaining in the same family ownership until the present day.

Founded in 1994, Mac Asphalt Ltd. is a British construction company that specializes in the construction of roads and motorways. Part of Hillhouse Estates Ltd., the company is based in Ayrshire, UK.