Caption:

The genesis of main-line diesel power in the UK? There

were two of these H A Ivatt designed Co Co 1600hp locomotives and they generally hauled express passenger trains, such as the Royal Scot, in multiple, but they were also tested on other regions singly. By the time this picture was taken, around the back of the LMR’s Willesden steam shed in late 1963, this one, 10001, was the remainer of the two and reduced to freight work only. Note that it is coupled to a brake-tender to help increase its brake-force when working trains that were not fully-fitted.