My friendship with Jenni Murray was cemented, believe it or not, at a lap dance club in Streatham. It was back in the early 2000s. I’d been a guest on Woman’s Hour, which Jenni had been presenting since 1987, a couple of weeks earlier. After the program, Jenni asked me to stick around for a chat. She wanted to talk to me about the sexual liberation of women, because she disagreed with some of my points of view on pornography, lap dancing, and pr…