A class 127 DMU rattles past Cricklewood Junction signal box working the 14.35 St. Pancras to Bedford service. Within four years this scene will have been completely transformed with the modernisation and electrification of the line out of St. Pancras. All the semaphores and the box will have been wiped away, the track massively rationalised and the ageing first-generation DMUs replaced by state-of-the-art BR class 317 EMUs.
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