During his time as a student in London, Cox probably spent as much time in nightclubs as he did studying. Through his partying Cox became friends with several well-known designers, such as the legendary Vivienne Westwood. As a result, in 1984, Westwood asked Cox to design shoes for her "Clint Eastwood" collection. One of the shoes that Cox created incorporated a 4-inch platform that would become the prototype of a 9-inch pair later worn by supermodel Naomi Campbell, when she famously fell during a Westwood fashion show in Paris, France in 1993. In his second year of college Cox designed and handmade fluorescent fringed moccasins for the celebrated Body Map brand of David Holah and Stevie Stewart.