Amazing science stories, unravels mysteries and reveals worlds you've never seen before.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | November 1977 | May 2022 | 99 |
| Season 1964 | February 1964 | December 1964 | 10 |
| Season 1965 | January 1965 | December 1965 | 24 |
| Season 1966 | January 1966 | December 1966 | 24 |
| Season 1967 | January 1967 | December 1967 | 21 |
| Season 1968 | January 1968 | December 1968 | 23 |
| Season 1969 | January 1969 | December 1969 | 36 |
| Season 1970 | January 1970 | December 1970 | 37 |
| Season 1971 | January 1971 | December 1971 | 32 |
| Season 1972 | January 1972 | December 1972 | 33 |
| Season 1973 | January 1973 | December 1973 | 33 |
| Season 1974 | January 1974 | December 1974 | 32 |
| Season 1975 | January 1975 | December 1975 | 26 |
| Season 1976 | January 1976 | December 1976 | 32 |
| Season 1977 | January 1977 | December 1977 | 25 |
| Season 1978 | January 1978 | December 1978 | 24 |
| Season 1979 | February 1979 | December 1979 | 25 |
| Season 1980 | January 1980 | December 1980 | 25 |
| Season 1981 | January 1981 | December 1981 | 27 |
| Season 1982 | January 1982 | December 1982 | 22 |
| Season 1983 | January 1983 | December 1983 | 24 |
| Season 1984 | January 1984 | December 1984 | 22 |
| Season 1985 | January 1985 | April 1985 | 15 |
| Season 1986 | January 1986 | June 1986 | 23 |
| Season 1987 | January 1987 | June 1987 | 23 |
| Season 1988 | January 1988 | July 1988 | 25 |
| Season 1989 | January 1989 | June 1989 | 20 |
| Season 1990 | January 1990 | June 1990 | 20 |
| Season 1991 | January 1991 | July 1991 | 23 |
| Season 1992 | January 1992 | June 1992 | 19 |
| Season 1993 | January 1993 | June 1993 | 21 |
| Season 1994 | January 1994 | December 1994 | 21 |
| Season 1995 | February 1992 | December 1995 | 20 |
| Season 1996 | January 1996 | December 1996 | 17 |
| Season 1997 | February 1997 | October 1997 | 16 |
| Season 1998 | February 1998 | November 1998 | 18 |
| Season 1999 | January 1999 | December 1999 | 13 |
| Season 2000 | January 2000 | December 2000 | 20 |
| Season 2001 | January 2001 | October 2001 | 11 |
| Season 2002 | January 2002 | December 2002 | 18 |
| Season 2003 | January 2003 | December 2003 | 19 |
| Season 2004 | January 2004 | November 2004 | 18 |
| Season 2005 | January 2005 | December 2005 | 20 |
| Season 2006 | January 2006 | November 2006 | 20 |
| Season 2007 | March 2007 | May 2007 | 9 |
| Season 2008 | January 2008 | December 2008 | 17 |
| Season 2009 | January 2009 | December 2009 | 18 |
| Season 2010 | January 2010 | November 2010 | 15 |
| Season 2011 | January 2011 | September 2011 | 14 |
| Season 2012 | January 2012 | October 2012 | 16 |
| Season 2013 | March 2013 | September 2013 | 15 |
| Season 2014 | January 2014 | September 2014 | 15 |
| Season 2015 | March 2015 | September 2015 | 12 |
| Season 2016 | March 2016 | October 2016 | 17 |
| Season 2017 | January 2017 | September 2017 | 15 |
| Season 2018 | February 2018 | November 2018 | 13 |
| Season 2019 | January 2019 | August 2019 | 6 |
| Season 2020 | January 2020 | July 2020 | 8 |
| Season 2021 | January 2021 | March 2021 | 2 |
| Season 2022 | March 2022 | July 2022 | 3 |
| Season 2024 | July 2024 | 1 | |
| Season 2025 | August 2025 | October 2025 | 4 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | January 2017 | April 2017 | 2 |
| Season 51 | February 2014 | 1 | |
| Season 53 | 0 | ||
| Season 55 | March 2016 | August 2016 | 12 |
| Season 57 | February 2018 | November 2018 | 13 |
| Season 2017 | May 2017 | June 2017 | 6 |
| Unassigned Episodes | 1242 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | February 2014 | 1 | |
| Unassigned Episodes | 1275 |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Michael Mosley | 15 | 02/28/2012 - 04/09/2020 | |
| Hannah Fry | 9 | 04/09/2020 - 01/04/2021 | |
| Chris van Tulleken | 6 | 04/09/2020 | |
| Rob Liddell | 3 | 09/23/2007 - 05/19/2020 | |
| Tim Haines | 2 | 02/06/1997 - 02/13/1997 | |
| Gregg Wallace | 2 | 01/04/2021 | |
| Andrew Thompson | 1 | 01/30/1997 |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Olly Bootle | 7 | 07/09/2009 - 07/17/2019 | |
| Tristan Quinn | 6 | 11/16/2010 - 01/19/2017 | |
| Simon Winchcombe | 6 | 05/04/2016 - 06/29/2017 | |
| Penny Palmer | 5 | 11/15/2009 - 07/19/2016 | |
| David Stewart | 5 | 03/27/2012 - 04/06/2016 | |
| Toby MacDonald | 4 | 09/03/2012 - 09/18/2017 | |
| Ben Lawrie | 4 | 02/07/2011 - 03/13/2012 | |
| Eileen Inkson | 4 | 03/01/2012 - 06/12/2017 | |
| Peter Leonard | 4 | 03/17/2015 - 06/29/2017 | |
| Sophie Robinson | 3 | 02/14/2011 - 08/02/2013 | |
| Kate Dart | 3 | 08/06/2012 - 03/14/2013 | |
| Diana Hill | 3 | 01/06/2011 - 09/10/2012 | |
| Rebecca Harrison | 3 | 08/27/2014 - 09/12/2017 | |
| John Lynch | 3 | 04/05/1993 - 12/09/1996 | |
| Milla Harrison-Hansley | 3 | 06/07/2016 - 11/21/2018 | |
| Michael Lachmann | 3 | 08/20/2014 - 10/18/2018 | |
| Laura Mulholland | 3 | 05/12/2011 - 10/17/2012 | |
| Naomi Austin | 3 | 10/18/2010 - 09/02/2015 | |
| Helen Sage | 3 | 04/03/2012 - 10/09/2014 | |
| Davina Bristow | 2 | 03/09/2015 - 10/23/2016 | |
| Giles Harrison | 2 | 10/12/2016 - 06/26/2018 | |
| Nicola Stockley | 2 | 09/07/2011 - 03/28/2013 | |
| Alastair Duncan | 2 | 07/06/2020 | |
| Naomi Law | 2 | 09/17/2010 - 04/10/2012 | |
| Helen Shariatmadari | 2 | 12/09/2009 - 01/17/2011 | |
| Gaby Hornsby | 2 | 01/09/2012 | |
| Serena Davies | 2 | 08/12/2015 - 08/10/2016 | |
| Annie MacKinder | 2 | 07/13/2017 - 07/22/2019 | |
| Andrew Cohen | 2 | 09/23/2007 - 09/30/2007 | |
| Ben Finney | 2 | 03/03/2013 - 06/12/2017 | |
| Nicola Cook | 2 | 08/22/2011 - 10/08/2014 | |
| Matthew Dyas | 2 | 01/17/2012 | |
| Alex Steinitz | 2 | 01/07/2010 - 03/27/2013 | |
| Suzy Boyles | 2 | 10/14/2013 - 10/21/2013 | |
| Stephen Cooter | 2 | 02/10/2010 - 06/12/2017 | |
| Sean Smith | 2 | 01/19/1987 - 09/23/2004 | |
| Louise Bourner | 2 | 08/09/2009 | |
| Emma Jay | 1 | 01/24/2011 | |
| Vicki Cooper | 1 | 08/29/2018 | |
| Sue Learoyd | 1 | 01/31/2011 | |
| Catherine Gale | 1 | 11/01/2018 | |
| Michael Duffy | 1 | 09/11/2013 | |
| Tom Cook | 1 | 10/11/2018 | |
| Kenny Scott | 1 | 08/27/2012 | |
| Graeme McAulay | 1 | 07/30/2012 | |
| Emma Sutton | 1 | 01/26/2009 | |
| Graham Russell | 1 | 09/16/2015 | |
| Euan Macdonald Smith | 1 | 09/12/2017 | |
| Tim Usborne | 1 | 03/20/2012 | |
| Jack Rampling | 1 | 01/13/2015 | |
| Dan Walker | 1 | 10/25/2010 | |
| Mike Radford | 1 | 09/03/2014 | |
| Tom Watt-Smith | 1 | 01/12/2015 | |
| Ben Fox | 1 | 03/06/2012 | |
| James Newton | 1 | 08/25/2016 | |
| Janine Finlay | 1 | 01/14/2015 | |
| Georgina Leslie | 1 | 08/11/2011 | |
| Emma Hatherley | 1 | 05/22/2016 | |
| Danielle Peck | 1 | 04/10/2011 | |
| Sophie Todd | 1 | 05/20/2015 | |
| Natalie Hewit | 1 | 08/22/2018 | |
| John Fothergill | 1 | 04/04/2013 | |
| Mark Radice | 1 | 03/30/2016 | |
| Annabel Gillings | 1 | 09/14/2011 | |
| Nic Young | 1 | 03/23/2016 | |
| Charlie Russell | 1 | 01/21/2020 | |
| Alex Hearle | 1 | 02/10/2014 | |
| Paul King | 1 | 08/02/2013 | |
| Mark J. Davis | 1 | 07/01/1991 | |
| Dan Kendall | 1 | 11/03/2010 | |
| Milla Harrison | 1 | 07/17/2014 | |
| Charles Colville | 1 | 05/11/2016 | |
| Nick Clarke Powell | 1 | 03/08/2011 | |
| Daniel Barry | 1 | 08/18/2014 | |
| Tom Hewitson | 1 | 08/07/2018 | |
| Clare Richards | 1 | 05/21/2020 | |
| Niamh Kennedy | 1 | 03/23/2020 | |
| Ben Wilson | 1 | 03/04/2015 | |
| Craig Collinson | 1 | 03/18/2021 | |
| Jon Eastman | 1 | 05/11/2015 | |
| Dan Clifton | 1 | 01/10/2011 | |
| Graham Strong | 1 | 04/11/2013 | |
| Anthony Barwell | 1 | 06/12/2017 | |
| Ed Booth | 1 | 02/03/2014 | |
| George Harris | 1 | 04/13/2016 | |
| Helen Williamson | 1 | 04/25/2016 | |
| Sreya Biswas | 1 | 09/26/2017 |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Alice Roberts | N/A | ||
| Giles Yeo | N/A | ||
| Jim Al-Khalili | 3 | 09/04/2008 | |
| Brian Cox | N/A |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Jacqui Farnham | 1 | 04/10/2011 | |
| Paul Overton | 1 | 01/04/2021 | |
| Michael Rees | 1 | 04/20/2020 | |
| James Van Der Pool | 1 | 03/03/2013 | |
| Steve Crabtree | 1 | 07/06/2020 | |
| Helen Thomas | 1 | 04/09/2020 | |
| Philip Daly | 1 | 07/25/1964 | |
| Ramsay Short | 1 | 02/05/1964 |
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