377208 speeds past Chelmscote on 27 March 2012 with the 2M41 14:10 East Croydon to Milton Keynes Southern service. The Class 377's dual voltage capability allows this Southern interloper to venture into 25kV territory. The nature of this dual voltage service has shifted to the north over the years, as it previously ran from Brighton to Watford Junction, using Class 319 units.