Methodologically innovative in its use of mixed-media diary research, this timely book offers a focused sociological study of non-binary people’s identities and experiences in the UK. From negotiating a sense of legitimacy when ‘not feeling trans enough’ to how identities can shift over time, it reveals important nuances of diverse gender identities while offering crucial insights into trans-related healthcare inequalities. The findings of this ground-breaking research mark an important contribution to the wider fields of gender studies, LGBTQ scholarship and medical policy. “Timely, contemporary and leading edge. This is a ground-breaking work in gender studies.” Lucy Nicholas, Western Sydney University Ben Vincent is a Research Fellow in the Department of People and Organisations at the Open University. They are a member of the World Professional Association for Transgender Health.