I was very sorry to read this in the latest RAS email:
The President and Council of the Royal Asiatic Society Hong Kong note with profound sadness the death of RASHK member Mr Brian Leonard Coak who passed away peacefully in Hong Kong on 24 September 2016.
A vigil will be held at the Hong Kong Funeral Home, 679, Kings Road, HK from 5 pm to 9 pm on Thursday 6 October 2016
The funeral service will take place at 1 pm on Friday 7 October 2016 at St John's Cathedral, Garden Road, Central.
Brian contributed information to several of the pages here on Gwulo, and has written many more articles about Hong Kong's history. As a Freemason and an ex-policeman, many of his articles were about those topics.
You can read Brian's articles at: http://www.kernowkid.com/articles.html