Duncan Cartlidge, FRICS, is a chartered surveyor and construction procurement consultant with extensive experience in the delivery and management of built assets, as well as providing education and training to a wide range of built environment professionals. Duncan is a former member of the RICS Quantity Surveying and Construction Professional Group Board and the 'Black Book' working group, and is the author of several best-selling books, including New Aspects of Quantity Surveying Practice, Estimator’s Pocket Book and Construction Project Manager’s Pocket Book.