Guy Higginbottom is an experienced consultant who spent much of his career working in private practice, including as Group Commercial Director for a large, regional building contractor. He has also held senior positions at global consultancies such as Atkins Réalis (formerly Faithful+Gould), and Arcadis (formerly EC Harris LLP). Guy is also the author of Wiley's 'Design and Build Contracts'.

David Chappell is an architect who has worked in both the public and private sectors, as well as acting as contract administrator for a building contractor.