For hundreds of years women were treated as somehow incomplete, or dangerous, if they didn’t have a (male) partner. It used to be illegal for women to live alone in some parts of the UK and, until much more recently, single women weren’t allowed mortgages. And then there’s the cat lady stereotype. Amanda Vickery, professor of history at Queen Mary University of London, tells Adam Fleming how the stigma around women’s singledom has evolved, and how it’s fading.