*indicates committee member at some point 

#indicates still a member

School natural history and music clubs

*London Natural History Society

#Mammal Society of Great Britain and Ireland (now Mammal Society)

Galpin Society (organology)

#British Trust for Ornithology

*#British ornithologists Union

British Ornithologists Club

*#Royal Geographical Society (Fellow)

*#Linnean Society of London (Fellow)

*#Tetrapods Club

* Royal Society of Arts (Fellow)

Rare Breeds Survival Trust

#Society of Authors

*# Fauna Preservation Society (now Fauna and Flora International)

FFPS (US)

Bat Conservation International

*IUCN SSC

*TRAFFIC

*#Bat Conservation Trust

Massachusetts Audubon Society

#Rare Poultry Society

#Poultry Society

*RSPB

#LIPU (Italy)

*#Suffolk Wildlife Trust

*British Herpetological Society

American Society for Mammalogy

Society for Study of Amphibians and Reptiles (USA)

Friends of the Royal Academy

*#Royal Anthropological Institute (Fellow)

*# IUCN National Committee for Netherlands

*# CommonLand (Netherlands).

Additionally, an observer/rapporteur or delegate at the following international conventions

International Whaling Convention

Convention on International Trade in Endangered Species

Convention on Migratory Species.

Additionally supported the following NGOs as a funder:

Programme for Belize

AESMO (Honduras)

Provita (Venezuela)

ProAves (Colombia)

Fundacion Jocotocco (Ecuador)

Nature and Conservation (Ecuador)

Nature and Conservation (Peru)

Guyra (Paraguay)

FuNaFu (Argentina)

Fundacion Patagonia Natural (Argentina)

REGUA (Brazil)

Biodiversidad (Argentina)

FPWC (Armenia)

Wildlife Trust of India

Nature Kenya

Wildlife Trust Zambia

Sierra Gorda (Mexico)

Philippines Reef and Rainforest Conservation Foundation

Iranian Cheetah Society

Employment history

1963 Winchester Archaeological Excavations (left as site supervisor)

1963-1969 Natural History Museum (left as Assistant information officer)

1969- 2008 freelance writer, editor and broadcaster

1971-1975 part-time Natural History Advisor Friends of the Earth

1975-1988 Part time executive secretary, Fauna & Flora Preservation Society

1975-1981 Part time chairman TRAFFIC

1989-2016 Chief executive of World Land Trust

2016 – Part time head of partnerships WLT.

Company directorships and related

Nature Company Ltd (UK)

Wildlife Works Ltd

Ardea Photographic Agency Ltd

World Land Trust Trading Ltd

Natural History Book Service Ltd.

Advisory boards of

Scottish Widows Environmental Investment Fund

Trustee Savings Bank Environmental Investment Fund

Lloyds-TSB Environmental investment Fund.