UK PM Starmer to face MPs as pressure rises over Mandelson appointment

U.K. Prime Minister Keir Starmer is set to face Parliament amid opposition calls to resign over the appointment of Peter Mandelson as U.S. ambassador. Starmer says he was not told Mandelson failed security vetting. That has seen senior civil servant Olly Robbins be sacked. CNBC’s Ben Boulos and Ian King discuss how Labour is grappling with the scandal.