Annie Besant promoted contraceptive advice to the Victorian working classes. In 1877 she was prosecuted under the Obscene Publications Act. New Generation Thinker Fern Riddell, from King's Collge London, outlines Besant's arguments and explores the ensuing debates about respectability and sexual behaviour in 19th-century England. Recorded on Saturday 26th October 2013 in front of a live audience at Sage Gateshead as part of Radio 3's Free Thinking festival.