Grant founded Afro Coffee in Cape Town in 2004. It was subsequently discovered by Johann Kastner, the worldwide head of Red Bull advertising, which led to a partnership in 2005 with the founder and owner of Red Bull, Dietrich Mateschitz. Grant continued work on the Afro Coffee brand out of Austria, working with Red Bull, which then bought the remainder of Afro Coffee in 2007. Grant then spent two-and-a-half years developing the concept and branding for BOS before launching the ice tea in June 2010, with co-founder Richard Bowsher. BOS has become an iconic South African brand, known for its distinctive coloured cans and strong visual identity.