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I am greatly enjoying biodiversity consulting after more than 25 years serving in senior positions for conservation organisations - for 10 years until February 2015, as Secretary General of Botanic Gardens Conservation International (BGCI).

I enjoy writing and editing and have published many research papers and articles as well as popular books. Currently I am working on a book about tree conservation for Timber Press. I am excited about further opportunities to communicate the vital importance of plant diversity.

Global Tree Assessment

I am co-chair of the IUCN/SSC Global Tree Specialist Group and in 2017 I was delighted to be awarded an OBE for the conservation and protection of wild tree species worldwide.

I am currently involved with the Global Tree Assessment a joint initiative undertaken by BGCI and the IUCN/SSC Global Tree Specialist Group. We aim to assess the conservation status of all tree species  by the end of 2020. This will support international biodiversity policy and conservation action for trees that are threatened with extinction. For more information see