David Feldman, the joint vice-chairman of Labour's inquiry into antisemitism, has acknowledged the credibility of the report was damaged by its author's acceptance of a peerage.
Professor Feldman, director of the Pears Institute for the study of Antisemitism in London, fielded questions on Baroness Chakrabarti's controversial probe at a session at Liverpool Limmud.
He said he only knew of her peerage when it was announced shortly after the report's publication in July.
"It matters not whether I think it damages the report," he said. "It has damaged the credibility of the report among large sections of the public, not only among Jews."