First Doctor - William Hartnell

• First Season (from 23 Nov 1963)
• Second Season (from 31 Oct 1964)
• Third Season (from 11 Sep 1965)
• Fourth Season (from 10 Sep 1966)

Second Doctor - Patrick Troughton

• Fourth Season (from 05 Nov 1966)
• Fifth Season (from 02 Sep 1967)
• Sixth Season (from 10 Aug 1968)

Third Doctor - Jon Pertwee

• Seventh Season (from 03 Jan 1970)
• Eigth Season (from 02 Jan 1971)
• Ninth Season (from 01 Jan 1972)
• Tenth Season (from 30 Dec 1972)
• Eleventh Season (from 15 Dec 1973)

Fourth Doctor - Tom Baker

• Twelth Season (from 28 Dec 1974)
• Thirteenth Season (from 30 Aug 1975)
• Fourteenth Season (from 04 Sep 1976)
• Fifteenth Season (from 03 Sep 1977)
• Sixteenth Season (from 02 Sep 1978)
• Seventeenth Season (from 01 Sep 1979)
• Eighteenth Season (from 30 Aug 1980)

Fifth Doctor - Peter Davison

• Nineteenth Season (from 04 Jan 1982)
• Twentieth Season (from 08 Jan 1983)
• Twenty First Season (from 05 Jan 1984)

Sixth Doctor - Colin Baker

• Twenty First Season (from 22 Mar 1984)
• Twenty Second Season (from 05 Jan 1985)
• Twenty Third Season (from 06 Sep 1986)

Seventh Doctor - Sylvester McCoy

• Twenty Fourth Season (from 07 Sep 1987)
• Twenty Fifth Season (from 05 Oct 1988)
• Twenty Sixth Season (from 06 Sep 1989)