About Us

Midlands, Central and South Wales, South East England, London.

* We are happy to explore your requirements outside of this area and may be able to visit subject to the situation.

Our head office is in the Hereford/Wales border where Principal Consultant and accredited Expert Witness Mark Chester is based.

Mark founded the business back in 2005 having previously worked as the tree officer in a busy planning department, dealing with trees on potential development sites and Tree Preservation Orders.  His aim has been to provide clients with a high-quality consultancy service.

Mark is a Chartered Arboriculturist and Fellow of the Arboricultural Association.  He has been a Certified Arborist since 1999.  He is our expert witness, becoming CUEW in 2012.  He holds the Lantra PTI (2010) and TRAQ (2015) Tree Risk management credentials.

He has a passion to understand more about trees and how they function.  Between 2009 and 2020, he ran the Consulting Arborist Society.  Today, he edits The World of Trees.

Mark is your first point of contact.  He has been working with trees since 1993.

Away from work, Mark enjoys looking at trees, reading and writing, and exploring history.

We undertake

  • Tree Safety Assessments
  • TPO submissions and advise
  • Trees & Planning (from initial feasibility assessment to implementing planning conditions)
  • Planting schemes designed
  • Amenity Tree Valuations
  • Help with planning appeals
  • Help with boundary disputes
  • Expert Witness support


Simon Hall runs the operations in London and the south east from his base in Guildford.

Simon Hall has been working with trees all his professional life.  Which now spans more than three decades!  He combines practical experience with a technical understanding of trees.  Simon has been a globe trotter, working on trees overseas.  He now runs the operation in the south east from his base in Guildford.

Kevin Martin provides level 3 inspections including decay assessments.

Kevin Martin is passionate about trees.  He manages the 14,000 trees at RBG Kew.  He also helps with undertaking climbing inspections and decay assessments (level three surveys) when our clients need them.

Reuben Keogh is passionate about trees.  He undertakes climbing inspections for the team and also prunes when needed.

Tree with sun shining through leaves