Ancient and other veteran trees (AoVTs) are a vital and treasured part of our histories, as well as our natural and cultural landscape. Britain is thought to have the greatest number of ancient trees in northern Europe. The Ancient Tree Forum (ATF) is the leading authority on the conservation of AoVTs and is the only organisation in England and Wales focusing solely on their protection and sustainability. The ATF works to secure the long-term future of ancient trees through advocacy of no further avoidable loss, good management, and the development of a succession of future ancient trees. We do this by raising awareness and understanding of their value and importance, for example, the crucial role they play in supporting biodiversity in their environments. Our work is achieved through an active network of volunteers, promoting and offering comprehensive VETcert training in best management and conservation practices of AoVTs (https://www.ancienttreeforum.org.uk/what-we-do/training/) among a range of key stakeholders such as landowners and arboriculturists, lobbying governments over the recognition and protection of AoVTs, encouraging their research, and fostering peoples’ appreciation of these important members of our ecosystems. ANCIENT TREE FORUM Registered Charity No.1071012 Company No. 03578609