Season
- Season 0 1976-01-01
- Season 1 1972-09-11
- Season 2 1973-09-03
- Season 3 1974-09-05
- Season 4 1975-09-04
- Season 5 1976-09-07
- Season 6 1977-08-30
- Season 7 1978-09-07
- Season 8 1979-09-05
- Season 9 1980-08-31
- Season 10 1981-09-06
- Season 11 1983-01-09
- Season 12 1984-01-29
- Season 13 1985-01-06
- Season 14 1986-01-12
- Season 15 1987-01-04
- Season 16 1988-01-07
- Season 17 1989-01-15
- Season 18 1990-01-07
- Season 19 1991-01-20
- Season 20 1992-02-16
- Season 21 1993-01-10
- Season 22 1994-03-20
- Season 23 1995-04-09
- Season 24 1996-05-29
- Season 25 1997-06-09
- Season 30 2003-07-07
- Season 31 2004-06-21
- Season 32 2005-03-08
- Season 33 2006-03-30
- Season 34 2007-07-09
- Season 35 2008-09-05
- Season 36 2009-08-28
- Season 37 2010-08-20
- Season 38 2011-11-04
- Season 39 2012-08-10
- Season 40 2013-08-09
- Season 41 2014-08-08
- Season 42 2015-08-07
- Season 43 2016-07-13
- Season 44 2017-07-28
- Season 45 2018-10-05
- Season 46 2019-08-09
- Season 47 2020-10-05
- Season 48 2021-08-23
- Season 49 2022-09-19
- Season 50 2023-08-28
- Season 51 2024-08-12
- Season 52 2025-07-14
Season 52 Episode
- Season 18 Episode 1
- Season 18 Episode 2
- Season 18 Episode 3
- Season 18 Episode 4
- Season 18 Episode 5
- Season 18 Episode 6
- Season 18 Episode 7
- Season 18 Episode 8
- Season 18 Episode 9
- Season 18 Episode 10
- Season 18 Episode 11
- Season 18 Episode 12
- Season 18 Episode 13
- Season 18 Episode 14
- Season 18 Episode 15
- Season 18 Episode 16
- Season 18 Episode 17
- Season 18 Episode 18
- Season 18 Episode 19
- Season 18 Episode 20
- Season 18 Episode 21
- Season 18 Episode 22
Mastermind - Season 18 Episode 21
5.40 30 minutes The last semi-final is for the four highest-scoring losers. Tonight's contenders:
Stephen Burgess (leading steward. Royal Navy) on the history of the Royal Navy, 1756-1815; Mary Rattle (housewife) on the life and works of Beethoven;Frank Rogers (teacher) on 15thand 16th-century voyages of discovery; David Edwards (teacher) on the life and work of Benjamin Thompson , Count Rumford. With Magnus Magnusson from the University of Essex, Colchester.
