This book investigates the rapid legal and social transformation of same-sex relationship recognition in the United Kingdom, specifically analyzing the transition from criminalization to the implementation of the Civil Partnership Act. Stephen Cretney, a distinguished legal scholar, utilizes his 2005 Clarendon Lectures to provide a rigorous examination of the shifting legislative landscape. He evaluates whether the legal framework established by the Civil Partnership Act achieves true equality or merely serves as a distinct, secondary status compared to traditional marriage.

Legal scholars and historians frequently cite this work as a precise, foundational analysis of the legislative shift toward same-sex recognition in the early 21st century. The text is noted for its clear, academic prose that balances historical context with technical legal scrutiny.