Peer named as chair of national inquiry, which is expected to cover England and Wales, after long-delayed search

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The former children’s commissioner Anne Longfield will chair the national grooming gangs inquiry in what will be a “moment of reckoning” for the nation, the home secretary, Shabana Mahmood, has announced.

Lady Longfield, who will resign the Labour whip in the House of Lords, was recommended by Louise Casey after a long-delayed search during which some victims quit the inquiry’s advisory panel amid disagreements over the chair appointment.