Mr. Yuen is currently a director of Saning Consultants Limited, a consultancy company. He was the managing director of Union Registrars Limited from 2004 to 2014. Prior to this, he had been a director and company secretary of South China Holdings Limited, the businesses of which included diversified financial services in securities and commodities brokerage, manufacturing, media and travel services, from 1989 to 2003. He had also served in Sun Hung Kai Securities Limited, a leading Hong Kong securities brokerage and financial service company, from 1979 to 1989, where he headed the secretarial and share registration departments. He has been a fellow member of the Hong Kong Institute of Chartered Secretaries and The Institute of Chartered Secretaries and Administrators, the United Kingdom since August 1994 and April 1989 respectively.