AlphaSearch
Forestry, woodland and arboricultural database of educational institutions and suppliers of materials, tools and services.
British Trees
Collection of pointers to information about British native trees and woodlands, with information on each of the 33 native tree species.
Institute of Chartered Foresters
Details of the ICF's activities, list of members practicing as consultants.
International Society of Arboriculture UK and Ireland Chapter
Part of the world's biggest group of professional arborists. Tree care advice and information on finding an ISA certified arborist.
Tree Advice Service
Independent charity offering expert advice by premium rate phone call. Tree damage alert bulletins available to download. Various other publications can be purchased.