Episode #3.5 - S3-E5
Continuity mistake: Danny is on the range firing a chrome/silver Beretta pistol. The other agent on the range takes it from him, but when he is shown shooting it has changed to a black Glock. When he hands it back it has become a Beretta again.
Episode #4.2 - S4-E2
Continuity mistake: The ladder carried by a bomber is a plain, ordinary ladder. After he puts it up against a post, it changes to an extendable one made up of three connected ladders.
Episode #6.6 - S6-E6
Continuity mistake: When the plane lands, they use stock footage of a Boeing 747 with four engines visible. All other shots are a 757 with two engines.
Answer: The shots of the tube station closing and the shot of the concourse were shot at Marylebone station. There is also a shot of the tracks in which a sign is visible pointing to Southwark station and the Jubilee Line, and I suspect this is a stock shot filmed at Waterloo station.
Sierra1 ★