Joe Siegler

(20 May – 24 Jun 1972) – Series 9, Story 5 (Serial OOO)

(8 Apr – 13 May 1972) – Series 9, Story 4 (Serial NNN)

(26 Feb – 1 Apr 1972) – Series 9, Story 3 (Serial LLL)

(29 Jan – 19 Feb 1972) – Series 9, Story 2 (Serial MMM)

(1 Jan – 22 Jan 1972) – Series 9, Story 1 (Serial KKK)

(22 May – 19 Jun 1971) – Series 8, Story 5 (Serial JJJ)

(10 Apr – 15 May 1971) – Series 8, Story 4 (Serial HHH)

(13 Mar – 3 Apr 1971) – Series 8, Story 3 (Serial GGG)

(30 Jan – 6 Mar 1971) – Series 8, Story 2 (Serial FFF)

(2 Jan – 23 Jan 1971) – Series 8, Story 1 (Serial EEE)