Yes Colin, I did something similar to feed a cable from the wardrobe area to the entrance door. However, this is not possible when trying to route a cable from one side of the door to the other as there is no gap between the ceiling trim and door frame in this area. There is a curved glossy trim above the door which the cable can go behind but the exit is several inches inboard of the locker roof above the sink which means the only method is to remove the locker side to access the cavity.
Here is a photo of the glossy trim from the other end above the front dinette -
5EBAC2CD-66C9-422A-86C6-E7BFCAC5DD87.jpeg - Bild entfernt (keine Rechte)
The photo was taken blind, ie: by putting my phone camera behind the blanking panel in the corner since it is not possible to get my head inside the locker!
Feeding the cable behind here was also done without being able to see what I was doing, not easy and it took several attempts; the trim cannot be removed because it is trapped behind the lockers at both ends! Bloody Germans...