Ms Cheung is the Senior Partner of KPMG Hong Kong. She was the Past President of the Hong Kong Institute of Certified Public Accountants. She currently serves as member of various public service committees, including the Standing Committee on Civil Service Salaries and Conditions of Service, the Standing Commission on Company Law Reform, the Consumer Council Audit Committee and the Transport Advisory Committee. Apart from being a member of the Advisory Committee, the Honorary Advisory Panel and the Inspection Committee of the Accounting and Financial Reporting Council, she is the Director of Hong Kong Cyberport Management Company Limited and Insurance Authority.
Ms Cheung had served as Member of the Air Transport Licensing Authority, the Financial Reporting Review Panel, the Independent Commission on Remuneration for Members of the District Councils of the HKSAR, the Non-local Higher and Professional Education Appeal Board, the Occupational Retirement Schemes Appeal Board, the Securities and Futures Appeals Tribunal and the Standing Committee on Disciplined Services Salaries and Conditions of the Service.