I recall working with the former Spanish President Jose Maria Aznar when he made the statement that Europe was founded on the basis of a Judea-Christian heritage, and that this formed a significant part of the common bond between nations of Europe and the West.
In the speech President Aznar did not go so far as to directly comment that the Christian doctrine was a positive thing, and yet he was greeted with great controversy and criticism in making the statement, despite its relatively uncontroversial grounding in historical fact.
In his Oxford speech David Cameron not only referenced the part Christianity has played in our shared Island history, but made reference to the positive and valuable nature of the Christian doctrine and faith in society, in so doing he moved wilfully from historical fact to personal interpretation.