The World

Prime Minister Margaret Thatcher plans a major shake-up of Britain’s counterintelligence service, MI5, and is likely to appoint one of her most trusted advisers, Sir Anthony Duff, 65, as its new director general, the Sunday Times of London reported. The move follows controversy over allegations in a television documentary that MI5 illegally tapped the telephones of trade union, civil liberties and anti-nuclear groups. Government investigators said they uncovered no wrongdoing.