That was interested other locomotives than Class 37s. Just wonder why ex-508s support Southern 455s while (non-37s) locomotives drag 455s to scrapped. Unlike 37 drag South West 455/9 to scrap without support from ex-508s.
The class 69 locos don’t have translator equipment to operate the brakes on the 455s, so the ex-508 translator vehicles are used. Locos like ROG 37800 have inbuilt equipment and a special coupling so don’t need translator vehicles.