Z-Cars further spin-off entitled "Second Verdict" in which Barlow and Watt looked into unsolved cases and unsafe convictions. Frank Windsor made a final appearance as Watt in the last episode of "Z-Cars", "Pressure", in September 1978, with Robins (John Phillips), the Detective Chief Superintendent from the original series who had risen to chief constable. Jeremy Kemp, Brian Blessed, Joseph Brady and Colin Welland also appeared, though not as their original characters. "Z-Cars" is incomplete in the archives. The period 1962–65 is reasonably well represented; though with big gaps. With the 1967–71 sixth series, when the programme was shown almost every week,
Z-Cars episodes and is still open to information regarding missing editions of 'lost' BBC television programmes. British vintage television enthusiasts Kaleidoscope are also interested in the recovery of 'lost' television shows, regardless of their original maker or broadcaster. In a 2000 poll to find the 100 Greatest British Television Programmes of the 20th century conducted by the British Film Institute, "Z-Cars" was voted 63rd. It was also included in television critic Alison Graham's alphabetical list of 40 "all-time great" TV shows published in "Radio Times" in August 2003. Z-Cars Z-Cars or Z Cars is a British television drama series centred on