[2] He has been appointed to various public positions including membership on the Administrative Appeals Board, Buildings Appeal Tribunal Panel, Central Policy Unit, Estate Agents Authority, Long Term housing Strategy Steering Committee, Standing Committee on Disciplined Services Salaries and Conditions of Service and Steering Committee on the regulation of the sale of first-hand residential properties by legislation.

He is member of the Disciplinary and Investigate Panels of the Hong Kong Institute of Certified Public Accountants (HKICPA).

In April 2021, Cheung criticized the Hong Kong Bar Association, and said that the group had commented too often on political issues.

[4] In December 2022, Cheung said that asking the NPCSC to interpret Hong Kong's national security law is the "healthiest way" for the legal system to develop, after the government appealed to Beijing to block Jimmy Lai from using UK lawyer Tim Owen.

[5] In February 2023, after a trip to the Middle East, Cheung said that no government officials or business leaders asked him about the national security law, and said that those in the Middle East "are not easily swayed by inaccurate or incorrect information.