Walker became a freelance website columnist for the BBC's recovered coverage of Formula One in 2009. He voiced the part of his own character in two episodes of the Five children's television programme "Roary the Racing Car" in late 2009. Walker made a further appearance on the programme as a professional skateboarder the following year. In early 2011, he lent his voice as a racing commentator to the touring theatre production of "Roary the Racing Car" entitled "Champion of Champions" in an animated portion of the programme. A television documentary called "Life in the Fast Lane" centred on Walker's life and advertising and commentary career was broadcast on BBC Two on 5 June 2011.