William built his career in the advertising industry in Hong Kong. He joined Hong Kong Design Centre in 2005 and was responsible for their flagship events — Business of Design Week (BODW), Knowledge of Design Week (KODW) and Design for Asia Awards (DFAA 2006–08).

In 2012, while retaining his role as a senior consultant to Hong Kong Design Centre, William joined PMQ — a newly launched creative site for design entrepreneurs. Since its opening in 2014, PMQ has recorded 23 million visitors and quickly became a popular destination of our city.