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File photo taken on Aug. 31, 2017 shows tributes in honor of late Princess Diana outside the Kensington Palace on the 20th anniversary of her death in Paris after a car crash, in London, Britain. The BBC Board on May 24, 2021 announced a review of the corporation's editorial and whistle-blowing policies amid mounting pressure following an inquiry into BBC's 1995 interview with Princess Diana. The BBC said it accepted the inquiry report, which said the BBC fell short of "high standards of integrity and transparency" over its interview with Princess Diana. (Xinhua/Han Yan)