- Harry Pearce: ...their main animosity is directed towards America. Consequently, our knowledge of their cadres and cell structures is quite sketchy.
- Richard Boyd: Sketchy?... Sketchy as in non-existent?
- Harry Pearce: No. Sketchy as in your knowledge of Al-qaeda when they were learning to fly and sunning themselves in Florida.
- Professor Stephen Curtis: [the Professor is annoyed at Ruth] You're just acting the dumb desk clerk.
- Ruth Evershed: Don't worry, you won't be the last person to patronise me.
- Home Secretary: You know, back in my days as a student radical our dreams were all about the glorious proletariat.
- Harry Pearce: We've still got those dreams on file somewhere.