“Celtic” Christianity

In a commentary piece for the TLS on the Venerable Bede, Archbishop Rowan Williams says:

A great deal of nonsense has been written about “Celtic Christianity”, as if this were an intelligent designation for some self-contained variant of Catholic orthodoxy in the early Middle Ages, a variant more attuned to the sacredness of nature and less obsessed with institutional discipline. Historically, the churches of those regions where Celtic languages were spoken never thought of themselves as part of a network other than that of the Western Catholic Church. They wrote and spoke Latin, they looked to Rome as the focus of their ecclesial life (Welsh kings as well as English spent their final years in Rome) and they accepted the creeds and canons of the Catholic Church.