DCI Barnaby and DC Jones are discussing the travels of a person of interest in the case. The traveler was said to have visited the Australian Embassy on Taiwan. The episode was viewed in 2006. But, Australia de-recognized the Republic of China (Taiwan) and formally recognized the Peoples' Republic of China in December, 1972.
Barnaby checks Hatchard's exemplary Hong Kong Police Service which puzzlingly fails to detail his arrest and imprisonment for people trafficking. Also Hatchard apparently bribed his way out of jail and made it back to England , set up a successful seafood business, but never bothered to change his name or disguise his identity and background.