Duncan has committed himself to the development of technology and innovation in Hong Kong since early 2000's. He is an advocate of local Tech and Innovation policies, a tech entrepreneur, a veteran investor and is often regarded as the leading figure in Hong Kong's Tech and Innovation sector.

In 2022, Duncan was elected to the 7th term of the Legislative Council, representing the Technology and Innovation Constituency. He has been diligent in uniting the industry and speaking up for the general public and the long-term development of Hong Kong. He often makes suggestions to the Government on technology development, economic and public health related policies. Many of those have been adopted and followed up by relevant authorities.

In addition to his role in Legislative Council, Duncan currently advises the Government on the following committees:

• Non-official Member of Digital Economy Development Committee

• Non-official Member of Advisory Committee on Attracting Strategic Enterprises

• Non-official Member of Advisory Committee on the Northern Metropolis

• Non-official Member of Committee on Innovation, Technology and Industry Development

• Member of Sports Commission

• Member of Youth Development Commission Action Group on Youth Engagement

• Non-official Member of Advisory Committee on the Northern Metropolis Sub-committee on Development of Industries

• Non-official Member of Advisory Committee on the Northern Metropolis Sub-committee on Transport and Other Infrastructure

Duncan has been a key contributor to Hong Kong's T&I development. He is President of Hong Kong Information Technology Joint Council and Convenor of Innovate for Future, a think tank representing some of the leading start-ups. He is also Chairman of HKTDC Information & Communications Technology (ICT) Services Advisory Committee, Chairman of Advisory Committee of the Department of Systems Engineering & Engineering Management of The Chinese University of Hong Kong, and Member of Advisory Committee of The Hong Kong Polytechnic University.

Duncan has participated and interested in over 100 technology companies and is an experienced professional investor. He is a frequent speaker at forums to share his insights and also a mentor to young entrepreneurs.

Duncan is also dedicated to community affairs. He is a Member of Hospital Authority, Chairman of its Information Technology Services Committee, and Chairman of Hospital Governing Committee of Tin Shui Wai Hospital.