Nicol of Skene are accredited by BSi to ISO 9001:2015. ISO 9001 is one of the world's most widely recognized Quality Management Systems. The Management System in place at Nicol of Skene covers the provision of civil engineering, construction, horizontal directional drilling and plant hire services. Our system enables us to continually monitor and manage quality across all operations, and outlines ways to achieve, as well as benchmark, consistent performance and service.