Urban Environmental Consultancy Director Sebastian Onslow MICFor is a Chartered Arboriculturist with over a decade of experience in professional arboriculture. Sebastian has provided consultancy services to support a vast range of planning applications from residential extensions through to strategic master planning. Sebastian has delivered large-scale tree risk management contracts for Local Planning Authorities, Housing Associations, Schools, Universities, Landowners, Private Estates and Conservation Charities. Sebastian also specialises in amenity tree valuation, tree and landscape planting schemes and protected tree appraisals.