Ancien dirigeant d'un fonds de pension, Duncan McFarland consacre sa retraite en partie à la protection de l'environnement et de la faune.

Sa fondation finance de nombreux programmes (voir plus bas), et lui-même est très investi dans les structures Panthera (pour qui il a acquis un ranch au Brésil, connu pour abriter la plus grande concentration de jaguars) et RARE.

The Bromley Trust :

Deforestation, Marine Conservation, Biodiversity & Sustainability
Work to prevent deforestation of the Mata Atlantica through preservation and restoration, and to protect its biodiversity
Work to protect the seas and oceans and promote marine biodiversity, particularly through the establishment of marine reserves
The preservation of the earth with particular reference to Islands, the Arctic and the Antarctic
Support innovative work to address climate change and sustainability