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Margaret Barker was granted a doctorate by specific decree of the Archbishop of Canterbury.
The prolific non-LDS British biblical scholar Margaret Barker spoke to the annual FairMormon conference last August. Her remarks are available here:
Along with the Catholic philosopher Stephen Webb, she also spoke as part of a panel to a small gathering of Interpreter Foundation volunteers and supporters, and a video tape of that panel discussion is available here:
http://www.mormoninterpreter.com/an-evening-with-margaret-barker-stephen-webb/