I'm Sorry I Haven't a Clue (English Wikipedia)

Cryer, Barry (2009). Butterfly Brain. London: Weidenfeld & Nicolson. p. 100. ISBN 978-0-2978-5911-6. Retrieved 9 February 2020. It was either David Hatch or Humphrey Barclay, the two producers involved in the planning of the first series, who decided it would be a good idea to put Humph in the role of chairman.

chortle.co.uk

"Profile". Chortle.co.uk. Archived from the original on 3 April 2006. Retrieved 26 March 2006.

"Fry, Brydon, Dee to host 'Clue' return". Digital Spy. 25 February 2009. Archived from the original on 27 February 2009. Retrieved 6 July 2009.

"Humphrey Lyttelton". 25 April 2008. Archived from the original on 9 February 2008. Retrieved 25 April 2008.

"Winners – The Comedy Award". (Gold Award). Sony Radio Academy Awards. 2002. Archived from the original on 30 December 2006. Retrieved 19 November 2011.
"Winners – The Comedy Award". (Gold Award). Sony Radio Academy Awards. 2004. Archived from the original on 28 September 2007. Retrieved 23 March 2007.

"News — RIP Humphrey Lyttelton". British Sitcom Guide. 25 April 2008. Archived from the original on 13 September 2012. Retrieved 26 April 2008.

Foster, Patrick (26 February 2009). "I'm Sorry I Haven't a Clue panel game to return to Radio 4". The Times. London: News International. ISSN 0140-0460. Barry Cryer, a regular panellist, who shared the chairman's duties with Lyttleton in the first series...

Chittenden, Maurice (27 April 2008). "Humphrey Lyttelton delivers swansong with giant kazoo band". The Times. London. Archived from the original on 17 May 2008. Retrieved 4 May 2010.

"Fry, Brydon, Dee to host 'Clue' return". Digital Spy. 25 February 2009. Archived from the original on 27 February 2009. Retrieved 6 July 2009.
"Iain Pattinson at Amanda Howard Associates" (PDF). Archived from the original (PDF) on 25 March 2009. Retrieved 6 July 2009.
"Profile". Chortle.co.uk. Archived from the original on 3 April 2006. Retrieved 26 March 2006.
"Humphrey Lyttelton". 25 April 2008. Archived from the original on 9 February 2008. Retrieved 25 April 2008.
Chittenden, Maurice (27 April 2008). "Humphrey Lyttelton delivers swansong with giant kazoo band". The Times. London. Archived from the original on 17 May 2008. Retrieved 4 May 2010.
"Steve Punt: My Radio 4". BBC (via Internet Archive). Archived from the original on 24 October 2004.
"Winners – The Comedy Award". (Gold Award). Sony Radio Academy Awards. 2002. Archived from the original on 30 December 2006. Retrieved 19 November 2011.
"Winners – The Comedy Award". (Gold Award). Sony Radio Academy Awards. 2004. Archived from the original on 28 September 2007. Retrieved 23 March 2007.

Foster, Patrick (26 February 2009). "I'm Sorry I Haven't a Clue panel game to return to Radio 4". The Times. London: News International. ISSN 0140-0460. Barry Cryer, a regular panellist, who shared the chairman's duties with Lyttleton in the first series...
Randall, David (27 April 2008). "Millions haven't a clue what they'll do without Humph". The Independent. London: Independent News & Media. ISSN 0951-9467. Retrieved 28 April 2008.