Keir Starmer and Shabana Mahmood are under pressure over the grooming gangs inquiry.The government’s inquiry into the child grooming gangs scandal is in crisis, giving Keir Starmer another problem to add to the huge list of challenges facing his struggling administration.Four survivors of abuse have quit their roles in the probe in recent days amid claims Downing Street is dragging its feet over the inquiry.Jess Phillips, the safeguarding minister, is also facing calls to resign after being accused of misleading parliament over the government’s handling of the scandal.Tory leader Kemi Badenoch piled the pressure on Starmer at prime minister’s questions, where the PM announced that his favourite troubleshooter, Dame Louise Casey, has been drafted in to “support the work of the inquiry”.Here’s what you need to know.How did we get here? In June, Starmer finally threw his weight