Dearing joined the civil service as a 16-year-old clerical officer in 1946. By 1967, aged 37, he was one of the two deputy heads of the coal division of the
Ministry of Power, with the rank of assistant secretary. In 1967 Dearing had responsibility for two major issues arising from the 1966
Aberfan disaster, in which a huge coal waste tip collapsed onto the town of Aberfan in Wales, killing 144 people including 116 school children. Dearing briefed the then Minister,
Richard Marsh on the question of the possible removal of
Lord Robens as chair of the
National Coal Board in the wake of the damning Davies Report, which found the Coal Board wholly responsible for the disaster, and on the issue of the removal of the remaining tips above the town. He became North East regional director of the
Department of Trade and Industry in 1972. He was chairman and chief executive of the
Post Office Board from 1980 and 1987 and chairman of the
Council for National Academic Awards (CNAA) from 1987 to 1988. He was chairman of
Ufi Ltd between 1998 and 2001, and their
Sheffield based head office is named Dearing House after him. In 2009, just before his death, Dearing co-founded with
Kenneth Baker the
Baker Dearing Educational Trust, a charity made to support
university technical colleges in England. ==University of Nottingham==