Ancient Tree Hunt Campaign to record and map ancient and veteran trees. Includes information on ancient trees, interactive map of trees found and ability to add new records. http://www.ancient-tree-hunt.org.uk/ - Report Link - More Info

Arbtalk Discussion forum aimed principally at those professionally involved in tree care. http://www.arbtalk.co.uk/ - Report Link - More Info

British Trees Collection of pointers to information about British native trees and woodlands, with information on each of the 33 native tree species. http://www.british-trees.com/ - Report Link - More Info

Consulting Arborist Society Lists members able to provide reports on various aspects of tree care. News and list of upcoming events organised by the society. http://www.consultingarboristsociety.co.uk/ - Report Link - More Info

Edinburgh Centre for Tropical Forests Association of 5 organisations promoting sustainable development and forestry through co-ordinating research. http://www.ectf.co.uk/ - Report Link - More Info

Growing Citrus Tips and other information on the challenge of growing citrus trees. http://freespace.virgin.net/d.hardy/ - Report Link - More Info

Institute of Chartered Foresters Details of the ICF's activities, list of members practising as consultants. http://www.charteredforesters.org/ - Report Link - More Info

International Society of Arboriculture UK and Ireland Chapter Information about the society and membership, tree care advice and information on finding an ISA certified arborist. http://www.isa-arboriculture.org/ - Report Link - More Info

Quantified Tree Risk Assessment A probabilistic method of assessing the risk of harm posed by trees. Includes information on training and a directory of trained users. http://www.qtra.co.uk/ - Report Link - More Info