Sir Crispin Tickell, Barry Cryer (pictured), Darlene Hard, Elza Soares

Julian Worricker on: The diplomat Sir Crispin Tickell, who advised four prime ministers, and influenced international policy on climate change... The writer and performer, Barry Cryer, whose work spanned sixty years and involved scripts for most of the comedy greats... Darlene Hard, 21 times a Grand Slam tennis champion, described as one of the greatest doubles players of her generation... And the Brazilian singer, Elza Soares, who was a campaigner for women's rights and against racism. Producer: Neil George Interviewed guest: Oliver Tickell Interviewed guest: Euan Nisbit Interviewed guest: Sally Jones Interviewed guest: Virginia Wade Interviewed guest: Robin Denslow Archive clips used: BBC Radio 4, Desert Island Discs - Sir Crispin Tickell 15/04/1990; BBC One, Breakfast News - Gulf War 17/01/1991; United Nations, UN General Assembly Climate Change 08/11/1989; AP, Rio Earth Summit 12/06/1992; BBC Four, Mark Lawson talks to Barry Cryer 02/04/2008; BBC Radio 4, I'm Sorry I Haven't A Clue 24/08/2015; YouTube, Darlene Hard vs Maria Bueno US Nationals 1960; BBC Archive, All England Championships Ladies Final 04/07/1969; BBC Archive, All England Championships Ladies Final TX 06/07/1957; BBC Four, Brasil, Brasil: Samba to Bossa 24/11/2007.