Plot: Question Time returns for a new series of current affairs debate with voters and politicians, in Ashton-under-Lyne, Greater Manchester. On the panel, from the Labour government, Lucy Powell MP, who is leader of the House of Commons; Graham Stuart MP, who was a minister in the previous Conservative government; the former leader of the Liberal Democrats, Tim Farron MP; the economist Mariana Mazzucato; and the columnist Jill Kirby