He is also an honorary Vice-president of the National Federation of Enterprise Agencies. He was the founding chair of the London Rebuilding Society and is involved in his local community as a trustee of the MERRY charity, linking up communities in Deptford and Mozambique through music and culture. In the field of economics, Mayo is a fellow of the World Economic Forum and addressed the annual summit in Davos from 2000 to 2003 on issues of economic change and social inclusion.