British Ecological Society
Elected as a Member in 1964.
Council Member 1977-80 and 1988-92.
Member of Ecological Affairs Committee 1978-81 and 1989-92.
Member of Working Group on Proposals for an Institute of Ecology (1989-90).
Chartered Institute of Ecology and Environmental Management
Founder Member of IEEM 1991.
Vice President 1991-2.
Chair of Professional Affairs Committee, 1991-93.
IUCN World Commission on Protected Areas
Member of WCPA 2014.
Member of Urban Specialist Group 2004.
Linnean Society of London
Elected as a Fellow in 1981.
Council Member 1983-86.
Member of Working Party on Biological Records Centres (1986-87).
Royal Society of Arts
Life Fellow 1999.
Society for the Environment
Chartered Environmentalist, 2005.
UNESCO Man and the Biosphere UK Urban Forum
Vice Chair 1990-94.