Thanks for the extra photos. These just give those of us fitting dashcams a little more confidence when installing the wiring now we can see what we are getting into.Thanks for the guide got it installed with no problems.
I pulled on the top of the A Piller to unclip the first clip, made it easier to carefully pass the wire under the air bag. A set of trim tools made it simple.
Attached some additional pictures in case it helps anyone