Factual error: Alex Peterson is continually referred to by everyone as the Secretary of Defence. This is an American title. The British equivalent is Secretary of State for Defence. "Defence Secretary" is used as an abbreviation; Secretary of Defence never is.
Episode #2.6 - S2-E6
Factual error: Flight Lieutenant Patrick Johnson's tombstone bears the incorrect rank of Lieutenant. RAF ranks are never shortened.
Episode #2.6 - S2-E6
Factual error: Nicholas Martin, who is a flight lieutenant, wears an other ranks' cap badge. RAF officers wear a different cap badge.
Episode #2.5 - S2-E5
Factual error: Staff Sergeant O'Hanlon is addressed several times by other soldiers as "Sir." Staff sergeants are never addressed as "Sir", and no soldier would ever do it. "Staff Sergeant" or "Staff" is the correct form of address.
Episode #1.4 - S1-E4
Continuity mistake: DC Li is wearing a white crewneck sweater with a blue band on the neckline until this episode, when she is suddenly wearing a blue button-up shirt. All episodes take place on a single flight.
Episode #1.5 - S1-E5
Continuity mistake: After Jess is taken by MI5, she gives Maddie her phone so she can view the video she shot. But, in Episode 4 (00:20:24), Sir George tosses Jess's telephone away and tells her to leave it. You might as well be carrying a tracking device, and they flee to another room while someone is shooting at them. (00:12:45)
Episode #1.6 - S1-E6
Factual error: Mike, a CIA employee in the UK, is driving a black left-side drive SUV. However, US government employees in the UK performing official duties drive right-hand drive vehicles because UK law requires driving on the left, meaning the steering wheel must be on the right side of the car for safety and aligning with local traffic rules and vehicle configurations. (00:32:49)
Suggested correction: There is no law saying all vehicles have to be right-hand drive on British roads - if this was the case all vehicles from mainland Europe would be forbidden on UK roads (they are all left-hand drive as they drive on the right on the continent). The US government would likely prefer to use right-hand drive cars for safety reasons though.
Episode #1.6 - S1-E6
Factual error: After having been shot and coming close to death, Dr. Nolan survives critical surgery and, yet, when DC Li enters his hospital room to visit, he is unconnected to any of the usual devices one would expect for a patient who has just completed surgery.
