Morse mentions XXXX, which is a Queensland beer and not on the NSW landscape, he is supposedly drinking it, but for plot embellishments the beer most likely, to be ubiquitous in NSW, would be Tooheys or Resch's at that time, but a good pun on the brand as Morse is assailed with culture shock, of the Promised Land.
The green panel van was there for days with the interior lights and the radio on. The battery would have gone flat ages ago.
Sgt. Humphries tells Sgt. Lewis he's got a territory of 400 square miles to look after. That sounds a lot but as a disc on a map it's only 22 miles across. Or as a square - 20 miles a side. Also, isn't it more likely that Sgt. Humphries would say '400 square kilometers'? Although that would be an even smaller patch.
At the start Lewis complains about having to go to Australia because of his leave on which he's planning to, "Visit the wife's mother in Gateshead."
Later when drinking with the Australian cop he says his wife isn't from the north but that he met her on moving down to Oxford.
Later when drinking with the Australian cop he says his wife isn't from the north but that he met her on moving down to Oxford.