Currently (February 2016), the TMO has a total of 17 posts responsible for tree management. Most of these post-holders possess international professional qualifications in arboriculture, such as the International Society of Arboriculture (ISA) Certified Municipal Specialist, ISA Certified Tree Risk Assessor, ISA Certified Arborist, holder of Certificate in Professional Tree Inspection (LANTRA Awards UK) or honorary bachelor degree in arboriculture, etc. One of the post-holders has a doctoral degree in arboriculture.