Founder and Director of Treevolution, Liam has been involved in tree work since 1979, initially in forestry but later as an Arboricultural Association Approved Contractor. Previously involved in the development of NPTC Certificates of Competence, Liam has more recently been Technical Author of A Guide to Good Climbing Practice. He is currently Technical Advisor (Forestry & Arboriculture) to LANTRA Awards and a registered Expert Witness. Author of numerous articles and publications, Liam has been guest speaker at several international conferences, and is involved in tree climbing competitions at all levels.

Phil has provided administrative, editorial and computing skills to Treevolution, on a part time basis, since 1996. Previous experience includes ten years management services in the steel industry; twenty years teaching in outdoor education (specialising in all aspects of mountaineering); and freelance editorship of rock climbing publications.

Jane has provided administrative and secretarial skills to Treevolution since 2003. With previous admin experience in the insurance industry, she provides a friendly and efficient contact for all our customers and associates.