Our exclusive behind-the-scenes access at No 10 as Andy Burnham became PM

Our exclusive behind-the-scenes access at No 10 as Andy Burnham became PMPublished2 minutes agoByLaura KuenssbergSunday with Laura Kuenssberg"You can clap now," a Downing Street official with a clipboard instructed the staff eagerly lining the halls of No 10 in the moments before the new prime minister walked in.The applause duly began before the famous door opened, so the first sight and sound to greet Andy Burnham and his wife were crowds of clapping staff, crammed into the Downing Street hall. They stretched up the long corridor all the way to the door of the Cabinet Room - left ajar for him to walk straight in and get down to work.I've seen plenty of prime ministers come and go from outside No 10. But I'd never been allowed inside at that moment before, able to hover outside the Cabinet Room and grab a quick word with the country's new leader at such an intense, symbolic time.I have rarely seen a politician look as thoroughly delighted as Burnham, pride bursting out of his buttoned-up suit - that's right, the T-shirt and bomber jacket didn't make it to No 10 - or a leader who has wanted to stop and shake as many hands.Burnham says he is prepared to call out Trump 'if right for Britain'Andy Burnham rules out early election in exclusive BBC interviewNHS 'will collapse' without social care reform, PM tells BBCImage source, No 10 Downing StreetNo 10 staff are already wondering if they'll ever be able to stick to a regular prime minister's schedule, normally designed with military precision. If Andy Burnham was able to take the time to stop and speak to everyone in the country, I suspect he probably would.It's a sign of his different style that our team was given permission to be behind the scenes at three key moments in the 59th prime minister's first week in charge - when he became Labour leader, when he walked into No 10, and on day one at his new Manchester outpost, No 10 North.Most import...