The report said the issue lied within the company's liberal staff, The Telegraph reported Monday.
BBC's Live 8 coverage was specifically named as being biased and "amounting to endorsement," the British newspaper said.
It said that instead of covering the important topics at hand, the BBC allowed itself to become a promotional tool for Live 8.
But after a yearlong investigation, the report still maintained that most of the BBC's coverage of day-to-day politics is fair and impartial.
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