Weekend podcast: Marina Hyde, calling the cops on jokes, and the end of shampoo

This week, Marina Hyde looks at the prime minister’s £150k treehouse plan (1m37s), Charlotte Higgins asks why we’re still obsessed with the Regency era (8m36s), Brian Logan documents the history of gags so offensive that punters called the police (24m33s), and Lisa Niven-Phillips charts the rise of ‘non-shampoo’ shampoos (33m54s)