i'm not able to look at the vehicle myself, but does someone know if there are any obstructions, cross-member etc in the way, that will need to removed in order to access the transmission pan?
If someone has a picture handy of the underbody, that might be super helpful

 

I haven't looked at mine yet, but I assume there is just some protective covering and brackets that have to be unbolted to remove the pan. There's a YouTube video of a guy doing an L405 Range Rover with the same transmission. I'm guessing the Disco is largely the same.

 

This is what is in the factory manual.

 

thank you!!