Mr Yim is the Chairperson of Hong Kong Institute of Marketing (HKIM) since 2004. Recently, he has been elected as the Vice President for Asia Marketing Federation (AMF), the only regional marketing organization in Asia.

Mr Yim has been renowned for his specializing in Marketing, Branding and Advertising in Hong Kong, he has been invited to deliver speeches and be a host in more than 150 public occasions. With more than 30 years experience, he runs business in advertising, design, and Internet communities. Partnership with the Marketing Engineering Centre of the Chinese University of Hong Kong (CUHK), he provides consultancy service in CRM and business intelligence for well established corporations in Hong Kong.

He has been invited for being judges of many Creative, Branding, and Marketing Awards in Hong Kong and China, such as The Best Brand Enterprise Award(Greater China) and Hong Kong Corporate Branding Award. He is also the founder of the HKIM Brand-with-a-Conscience Award and the Young Marketing Communicator Award.

Mr Yim has a wide spectrum of interest, one of which is being a columnist for a few leading newspapers in Hong Kong, just to name a few, "Advertising Strategies" on Hong Kong Economic Journals《信報》, "Marketing Strategies" on Ming Pao《明報》and "Marketing Intelligence" on Sing Tao Daily《星島日報》. His articles are widely read and known in the field. He has been invited to be a commentator on entrepreneurship, marketing practises and ethics by numerous newspapers and magazines including the leading Japanese newspaper Asahi Shimbun《朝日新聞》. He was one of the hosts of Win on Marketing TV programme and being invited as a guest hosts by Metro radio and RTHK in their marketing programmes.

Mr Yim is also active in community services. He is a committee member of Anti-spam Task Force run by Hong Kong Government; a member of the Advisory Committee of Design, Marketing and Licensing run by Hong Kong Trade Development Council (HKTDC).

For education field, he is a designer for career advancement courses in Marketing and Branding. He is also an advisor for Chu Hoi College, and an advisor for the board of Academy Management Consultants (AMC). He is also an advisory committee member for Institute of Vocational Education (IVE) advertising programme. He was the President of Lions Club of Metropolitan in 1999 to 2000.

Last but not least, he wrote a book called Win on Marketing with Prof Leo Sin for SMEs and will publish a few more on Marketing, Internet and Advertising in the months to come.