Hong Kong Arts Festival
In 2002, Hui was elected a steward of the Hong Kong Jockey Club. Hui also served as the Vice-chairman of the Hong Kong Arts Festival Society and Chairman of its Programme Committee from 2001. In 2004, he became the Honorary Secretary of the Hong Kong International Film Festival Society Ltd. and a member of the Executive Committee of the Hong Kong Philharmonic Society Ltd. He resigned all these posts when he assumed office as the Chief Secretary for Administration.