By Vassia Barba A United Airlines flight from the UK to Newark Airport was diverted after “life-threatening behaviour from unruly passenger,” it is being reported. We’ll be bringing you the very latest updates, pictures and videos on this breaking news story. Please check back regularly for updates on this developing story HERE For all the latest news, politics, sports, and showbiz from the USA, go to The Mirror US Get email updates on the day’s biggest stories straight to your inbox by signing up for our newsletters . Get all the big headlines, pictures, analysis, opinion and videos on the st…