Another frosty morning, but at last some sunshine as well! 82304 leads 1R14, the 08:37 from Marylebone to Birmingham Moor Street, with 67013 "Dyfrbont Pontcysyllte" bringing up the rear of the Chiltern Mainline Silver train. It is about to pass the foot-crossing south of Princes Risborough on the descent from Saunderton summit, where the up and down lines are grade separated. 09:05, Tuesday 17th January 2012. Digital Image No. GMPI10826.