On a bitterly cold 15 December 2007, 66703 Doncaster PSB 1981-2002 passes Fritwell with the Pathfinder Tours 1Z11 06:28 Gloucester to Dollands Moor 'Moor and More' railtour. This is the northern end of the Chiltern Line, between Ayhno Junction and Bicester and does not normally see loco hauled trains of any kind, only a steady stream of Class 165 & 166 Chiltern Railways units. Such is the intensity of the service, that the track has been redoubled in the last few years to increase capacity.