Following his release from Robben Island in 1991, Peter-Paul joined Engen and later South African Breweries. In 1997 he joined Makana Trust, where he is a founding trustee and former chairman. He later co-founded Makana Investment Corporation of which he is the current executive chairman. He is also the chairman of South African Airlink, Heart 104.9 and Igagasi 99.5 radio stations and Sebenza Forwarding and Shipping Consultancy. He was appointed to the Hulamin board in 2007 as an alternate to Johannes Bhekumuzi Magwaza and a full director of Hulamin in October 2009.