A very strange class 2 working with 61168 shunting.

2Z65 is a strange working, see also D1797, to have same stock on two consecutive Thursdays, both with Tinsley locos.
There was a lot of driver training around that time, both locos under 5 month old.
The use of a brake van is unusual, perhaps when the loco runs round at its destination,( Grimsby?), a long propelling movement is then made. MGR trains did this in the Blyth area in later years.