Having been waiting for a few minutes on the down main line in the distance, 66017 and 66019 have now crossed to the up main line and are passing through Princes Risborough with 3J04, the Chiltern RHTT. The train is now returning to Marylebone and jetting of the track has already commenced. 12:32, Tuesday 9th October 2012. Digital Image No. GMPI12559.