Brookman was member of the Joint Industrial Council for Slag Industry and of the British Steel Joint Accident Prevention Advisory Committee from 1985 to 1993. He was also member of the  British Steel Advisory Committee on Education and Training from 1986 to 1993, and of the executive council of the European Metalworkers' Federation from 1985 to 1995. Since 1991, he is member of the National T.U.
From 1985 to 1993, Brookman was part of the Joint Industrial Council for Slag Industry and the British Steel Joint Accident Prevention Advisory Committee. He also served on the British Steel Advisory Committee on Education and Training from 1986 to 1993, and the executive council of the European Metalworkers' Federation from 1985 to 1995. Since 1991, he has been a member of the National T.U.