Episode #4.2 - S4-E2
Factual error: Ram says he has two "Chief Constable's Commendations" (which are also shown on his office wall). He has spent his entire career in the Metropolitan Police, which has a Commissioner instead of a Chief Constable.
Unforgotten (2015)
1 factual error in Episode #4.2
Starring: Nicola Walker, Sanjeev Bhaskar, Jordan Long, Lewis Reeves
Plot hole: The car was tracked down by finding the original car key on Jimmy's body. If he had stolen the car from the original owner, how did he come to have the original car key?