Complex sentence: Around 1981 when District Boards were set up, Urban Councillors were appointed ex-officio members of the Boards and Elliott was member of the Kwun Tong District Board until the appointment system was abolished in 1991.
Split into simpler sentences: Around 1981 when District Boards were set up, Urban Councillors were appointed ex-officio members of the Boards. Consequently, Elliott was member of the Kwun Tong District Board until the appointment system was abolished in 1991.