Colas Rail 37057 & 37116 replace 73s on test train duties - 7/12/23

A rare occurrence is captured in this footage, showing Colas Class 37 locomotives 37057 and 37116 performing test train duties on December 7th, 2023. Typically, these tasks are carried out by GBRf 73/9s, but a shortage led to the use of the 37s instead. The video shows the locomotives passing Beltring and later moving south of Paddock Wood towards Ashford following a reversal. No headcodes were identified in the footage.

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