Combining ethnographic research with theological analysis, this book explores how the Catholic Charismatic Renewal (CCR), one of the largest new movements within the global Catholic Church, has developed in contemporary Britain and Northern Ireland. Drawing on extensive fieldwork, this study analyses the beliefs, behaviour, and worldviews of CCR members and considers how these relate to key theological themes in the movement's unique encounter between Pentecostalism and Catholicism. The author explores the extent to which the CCR has been integrated into the mainstream of the Catholic Church, and how the movement's members have adapted their theology over time. Painting a picture of a diverse community, this book enriches understanding of the CCR and contemporary Christianity in Britain.