 On the Chiltern Main Line, the snow caused tree branches in the cutting at Seer Green to be weighed down and some of them were brushed by passing trains.On 11 December, the driver of an empty train from Marylebone to Princes Risborough came across a fallen branch lying across the track.He telephoned the signalman at High Wycombe to tell him that he was going to clear the obstruction and would be delayed by a few minutes.