A former senior Metropolitan Police chief has called for the investigation into the disappearance of Madeleine McCann to be wound up.John O'Connor, the respected former head of the force's elite Flying Squad, has questioned whether the investigation should continue after it was revealed Scotland Yard has reportedly spent £11million on the case but have made no arrests.The Metropolitan Police launched a review of the case in 2011 after David Cameron intervened on behalf of Madeleine's...
