Grant has been involved in conservation work for more than 30 years, and lives by the philosophy of “getting his feet wet and hands dirty.” In Singapore, he has an ongoing program to replant mangroves at coastal shores to encourage the return of native fauna and flora.

Grant has been very active in the anti-sharkfin campaign, heading up a marketing and educational campaign to stop the brutal slaughter of sharks for their fins. He has created, marketed and widely distributed postcards and posters which illustrate the devastation of the shark-finning practice, the dolphin slaughter in Japan and captive dolphin shows in Asia.

In 2000, Grant was awarded the Greenleaf Award, which is the highest environmental award given to an individual in Singapore.

Presently, Grant is the head of the Green Volunteers Network of the Singapore Environment Council, which is the most active environmental organization in Singapore.