Class 56 UKRL 56098 + 56104 Claggy Start Up At Clapham Junction - 27/12/16 

UKRL Grids Class 56 number 56104 and 56098 are seen erupting into life just outside of Clapham Junction with a claggy startup.
The UK Rail Leasing class 56s were on hire to Rail Operations Group. They're seen preparing to leave for 6O66 Clapham Yard to Dollands Moor in this video.
The class 56s were used for the delivery of a pair of the new South West Trains class 707s.