Garth Walker founded Orange Juice Design in 1994 (acquired by Ogilvy South Africa in 1996), and more recently in 2008, Mister Walker.

Mister Walker works in both the corporate and private sector for many of South Africa’s best known brands - on both large and small projects across a wide range of disciplines.

Walker's personal interest as a designer seeks to explore the question: “what makes me African – and what does that look like?”

Since 1995 Walker has self-published his 'African' experimental graphics magazine ijusi (translated as "juice" in Zulu), to world-wide acclaim. The publication celebrated twenty years and thirty issues in 2015