Factual error: We see Will in his Series 901 Porsche 911 (an air-cooled or real Porsche). We see the digital display of his Becker Europa radio. The Europa (1960s to 1980s) did not have a digital display.
Episode #1.1 - S1-E1
Factual error: The Chief Constable authorises Max's attachment to the New South Wales Police. Max is a Metropolitan Police officer. The Met is headed by a commissioner, not a Chief Constable.