The Lesser of Two Evils - S1-E6
Factual error: The bomb in the laptop contains 6 ounces of semtex. Nowhere near enough to "blow up the street." Tom's girlfriend could have gone upstairs and been perfectly safe from the blast.
Revealing mistake: The list of intelligence agents names that Johnny Marks steals is a list of the same names repeated over and over again.
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 ★