Celtic Christianity is a branch of the Independent Sacramental Movement (ISM) comprised of individuals and organizations that self-identify as Celtic Christians. In many cases, Celtic clergy possess lines of apostolic succession and share valid sacraments. Most adherents choose Celtic Christianity as an alternative way to live and express their Christian faith, with an emphasis on the Northumbrian spirituality and the values and ideals of Celtic monasticism, which include Trinitarian belief, a love of learning, monasticism, acsesis, the sacraments of the Church, contemplation and mission, hospitality, and an affirmation of creation.
Largely due to the movement's "working clergy" and lack of resources, Celtic Christianity is constantly in flux, as clergy flow in and out of the movement. Unlike the Roman Catholic Church, which is centered in its hierarchy, Independent Catholicism possesses no uniting structure, and most clergy are quite independent from one another and from other Celtic Christian communities and jurisdictions. Many Celtic Christians are largely unaware of the larger context of Celtic Christianity and of the Independent Sacramental Movement, thus possessing little knowledge of Independent Catholicism, Independent Orthodoxy, Independent Anglicanism/Episcopalianism, Esoteric expressions of Christianity, and other Christian clergy and communities that possess apostolic succession.
Celtic Christianity is comprised of: