www.treeradar.co.uk: Use of Tree Radar to map tree roots
www.treeradar.comTree DNA analysis:www.bioprofiles.co.ukTree root ID services:www.botanical.netSubsidence:www.theclayresearchgroup.comwww.subsidenceforum.org.ukProfessional and trade bodiesInstitute of Chartered Foresters:
www.charteredforesters.orgArboriculture Association:
www.trees.org.ukConsulting Arborist Society:
www.consultingarboristsociety.org