On 11 and 12 March, an international and interdisciplinary conference was held at Cardiff Law School to mark the tenth anniversary of the foundation of its Centre for Law and Religion. Eleven professors, all of whom are leading scholars with international reputations in this field, addressed the changing understandings of the family in international law, state law and religious law. The papers given provided a clear illustration of the vast array of areas in which law, religion and the family interplay and affect each other through the application of the law, such as legislative developments concerning same-sex relationships, biomedicine and religious reservations, and developments that illustrate a changing understanding of what constitutes a family.