Police have launched an investigation after a man was left unconscious at a busy London railway station last night. Paramedics rushed to St Pancras Station, in central London, at around 8.40pm and the man was taken to a major trauma centre with 'serious injuries'.Footage circulating online shows hard-right activist Tommy Robinson pacing back and forth beside the unresponsive man lying face-down on the concourse.Robinson, whose real name is Stephen Yaxley-Lennon, had earlier posted footage of himself handing out flyers inside the station for an upcoming 'free speech' protest on September 13. He later appeared to be walking in the background...