Ouseley was a local government officer between 1963 and 1993. He was appointed the first principal race relations advisor in local government. From 1981, he served as principal race relations adviser and head of the
Greater London Council's Ethnic Minority Unit. He later became chief executive of the
London Borough of Lambeth and the former
Inner London Education Authority (the first black person to hold such an office), responsible for over 1000 schools and colleges across the capital. Ouseley was chair and
chief executive in the
Commission for Racial Equality from 1993 to 2000. From 1996, he was a director of Brookmight Security and, from 2000, of Focus Consultancy. He was managing director of Different Realities Partnership between 2000 and 2005, then subsequently a self-employed management consultant undertaking reviews of organisations' performance and assignments in pursuit of equality and diversity outcomes. ==Work on racism==