Just did this job yesterday (well the dismantle part) - very good video - saved me an hour of swear words trying to wiggle it out because it felt so close and almost achievable (I tried for 2 minutes) but I ended up doing the manifold trim instead. Mine was leaking oil externally via the little tell tale weep hole near the oil filter - means it was leaking past the gaskets internally. Your video helped me decide to do it myself after already paying a mechanic to replace my inlet manifold as they wrongly thought that was the source of the leak.
I have just taken the offending part apart, it turns out mine was also leaking from the weephole just behind the top water inlet. It was so dirty you couldn't see it when in the car.
Planned to do this job today and looked up what it entails one last time, great narration, camerawork and perfect timing for me. Thought I would also encounter the issue with the oil separator bracket, you've saved me a lot of shouting and swearing. Did you have any issues removing the glow plugs? Seen a few videos saying to get the engine hot before attempting removal