This article explores the contribution that the figure of economy can make to understanding gender in contemporary Britain, focusing on gender as a social quality and legal category that is produced, allocated and used. The article proceeds in two parts. The first part considers the politics of sex-based feminism and gender-as-diversity through an economic frame. The second part focuses, in detail, on one specific juncture where these diverging politics meet: decertification – a law reform proposal to dismantle th…