Yes, it was called the Synod of Whitby, which was in my original post, when the RCC attempted to assert control over the Celtic Church, with some superficial sucess, that later unwound.
The actual origin of the Celtic/Anglican church is in doubt. There is good reason to believe there were Christian missionaries in the various Isles as early as 40AD --- roughly 6 years after the crucifiction.
You haven't been reading a lot of Geoffrey Ashe's stuff lately, have you? ;)
What would those good reasons be? The Hymn that starts: "And did those feet, in ancient times, walk upon England's mountains green?"