Whether or not Mackintosh had any experience in the world of espionage, the organisational structure of SIS depicted in "The Sandbaggers" is probably closer to that of the CIA than that of the SIS. There is no formal section of the SIS known as the Special Operations Section, as far as is publicly known, and there is no intelligence unit known as the Sandbaggers. However, the departures from accuracy in the show may have been deliberate, in order to avoid problems with the SIS under the Official Secrets Act. Ray Lonnen mentioned in an interview that one episode in the second series was vetoed because it dealt with sensitive information, which explains why the second series has only six episodes.