Series 1 (1981) {{Episode table |background=#7BC2E2 |overall=5 |title=20 |aux1=20 |aux1T=Produced by |director=20 |aux3=10 |aux3T=Runningtime |airdate=16 |country=UK |viewers=11 |episodes= {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list
Series 2 (1982) {{Episode table |background=#FFE101|overall=5 |title=20 |aux1=20 |aux1T=Produced by |director=20 |aux3=10 |aux3T=Runningtime |airdate=16 |country=UK |viewers=11 |episodes= {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list
Series 3 (1983) {{Episode table |background=#80BB5F|overall=5 |title=20 |aux1=20 |aux1T=Produced by |director=20 |aux3=10 |aux3T=Runningtime |airdate=16 |country=UK |viewers=11 |episodes= {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list First appearance of
Jim Broadbent as Roy Slater {{Episode list {{Episode list First appearance of
Paul Barber as Denzil Tulser, and
Kenneth MacDonald as Mike Fisher
Series 4 (1985) {{Episode table |background=#A68CC3|overall=5 |title=20 |aux1=20 |aux1T=Produced by |director=20 |aux3=10 |aux3T=Runningtime |airdate=16 |country=UK |viewers=11 |episodes= {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list
Series 5 (1986–1987) {{Episode table |background=#304677|overall=5 |title=20 |aux1=20 |aux1T=Produced by |director=20 |aux3=10 |aux3T=Runningtime |airdate=16 |country=UK |viewers=11 |episodes= {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list
Series 6 (1988–1989) {{Episode table |background=#B30027|overall=5 |title=20 |aux1=20 |aux1T=Produced by |director=20 |aux3=10 |aux3T=Runningtime |airdate=16 |country=UK |viewers=11 |episodes= {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list
Series 7 (1990–1991) {{Episode table |background=#FCA517|overall=5 |title=20 |aux1=20 |aux1T=Produced by |director=20 |aux3=10 |aux3T=Runningtime |airdate=16 |country=UK |viewers=11 |episodes= {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list
Christmas specials (1991–2003) {{Episode table |background=#EF98AA|overall=5 |title=20 |aux1=20 |aux1T=Produced by |director=20 |aux3=10 |aux3T=Runningtime |airdate=16 |country=UK |viewers=11 |episodes= {{Episode list {{Episode list {{Episode list {{Episode list {{Episode list First appearance of Benjamin Smith as Damien Trotter ==Other==