The series reflected the fact that it was made during a dark period for the real-life Flying Squad, which in the late 1970s had been publicly censured for being involved in bribery, corruption and excessively close links with the criminal fraternity. The actual commander of the Flying Squad, Detective Chief Superintendent Kenneth Drury, was convicted of five counts of corruption and imprisoned for eight years on 7 July 1977 (which may have inspired a plot element in the movie "Sweeney 2"). An internal investigation, called Operation Countryman, was then launched to stamp out corruption.