A moral philosopher and philosopher of human rights, Professor Griffin spent most of his career at Oxford University, where he was Emeritus White's Professor of Moral Philosophy.   There  is a brief memorial notice from Keble College, Oxford here.  (Thanks to Matt Lister for the pointer.)  I will add links to other memorial notices as they appear.

UPDATE:  Oxford Philosophy's memorial notice is here.  (Thanks to Grant Lamond for the pointer.)