Class 37 and DBSO at Chelmsford

Caught just by chance, a Network rail O.L.E test train formed of a DBSO, MK1 carriage modded with a pantograph and a MK2 carriage with Colas Rail Cass 37 - 37099 'Merl Evans' pushing.
Not much noise as there is a speed restriction on the viaduct at the moment.