I knew and flew with Hunter at Sek Kong and returned to the UK shortly before his untimely accident. He was killed whilst riding a motorbike in the New Territories. He was liked and missed by all of us on 28 Sqn and the rest of the Wessex Fleet.
I'm sorry I cannot give any information on the other name you mention but as a long serving member of the Wessex / Hong Kong world I suspect it was also an accident or natural causes.
RIP both.
Huge