In 1987, Meller was the joint chief executive of Julius A. Meller Ltd of London, a "diversified manufacturing company", from which his father had retired. As of 2018 Meller was helping to "run his family's company", described as "a luxury goods company." Meller founded the Meller Educational Trust, which runs four schools and a university technical college. In June 2013, Meller joined the
Department for Education as a non-executive board member. The trust runs four schools and a university technical college, and served as chair of the National Apprenticeship Ambassador Network and the Apprenticeship Delivery Board. Following calls by MPs and others, he resigned from the Department for Education's board of directors, and the apprenticeship delivery board, the day after the story broke in the
Financial Times. Meller also resigned as a trustee of the
Mayor's Fund for London. ==Honours==