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,
Nicholas Smith (actor) March 2013, Smith was the last surviving member of the original cast of "Are You Being Served?" The only other principal actor who survives is Mike Berry, who joined the cast as "Mr Spooner" when Trevor Bannister left the series. From September 1972, in contrast to his contemporaneous work in "Are You Being Served?", he also had a semi-regular role as PC Jeff Yates in the series "Z-Cars". His last appearance as Yates was in February 1975. His film work included appearances in "Salt and Pepper" (1968), "A Walk with Love and Death" (1969), "The Twelve Chairs" (1970), dubbed in