Read this: BBC 2 declares War on BBC 1 - NewsBiscuit

Summary: Warring news-tribes, angered by the Panorama investigation, opened fire on studios where radical BBC 1 journalists are known to be in occupation. Blue helmeted health and safety officials tried to separate the fighters, but were unable to produce the correct paperwork, and were asked to leave at gunpoint by privatised security staff. Ken Bruce, who was eating his sandwiches in a nearby office, took a direct hit to his Thermos flask increasing the prospects of Radio 2 being drawn in to the dispute. - newsbiscuit.com