- Sudden Oak, Larch and Beach decline. Also other species, link will help you identify symptoms for what your tree or shrub is suffering from https://www.rhs.org.uk/advice/profile?pid=329
- Ash dieback otherwise known as chalara fraxinea information https://www.rhs.org.uk/advice/profile?PID=779
- Chestnut blight https://www.rhs.org.uk/advice/Profile?pid=780
- Royal forestry society http://www.rfs.org.uk
- Arbtalk arboriculture forum with plenty of useful information - www.arbtalk.co.uk
- International Association of Arboriculture - http://www.isa-arboriculture.org/
- Royal Horticultural Society - www.rhs.org.uk
- Tree Preservation Orders (TPO's) basic info - http://www.planning-applications.co.uk/tpo1.htm#whatisatpo
- Waverly Tree Department T.P.O. guidance and help- http://www.waverley.gov.uk/site/scripts/download_info.php?downloadID=353
- Waverly planning information - http://www.waverley.gov.uk/site/scripts/documents.php?categoryID=200074
- Guildford Tree Information - http://www.guildford.gov.uk/index.aspx?articleid=4018