Clips for lower door trim
 

Anyone happen to know the part number? my drivers door trim is making a bid for freedom

Have you checked that parts are actually missing? Mine was hanging off and it turned out it had just "popped off" a couple of clips. Removing carefully and refitting properly sorted it.
IIRC there's a retaining screw on the inside and with that removed it just slides off backwards. Might need some gentle persuasion if it's a bit cruddy behind.

Parts catalog is on 7zap.com

Left side - 4D0854721
Right side - 4D0854722

to update

I checked and luckily nothing was actually broken, just needed me to remove the trim fully, reattach all the clips and replace.

So for the benefit of anyone else finding this in the search in future.......

This is a push on trim on the inside of the door, just pull it off

http://62.255.96.108/attachment.php?...1&d=1693571158

underneath there is a self tapping screw at each end. These lock into the plastic clips pnm the outside of the door. Remove both screws.

On the outside remove the trim panel. If like mine all of the plastic clips stay on the door. They need to be removed and put back onto the trim strip

http://62.255.96.108/attachment.php?...1&d=1693570600

As you can see they simply slide to the left and pull off

reattach to the silver are of the door strip below. each clip has 3 tabs that need to be squeezed into place with a small flat blade screwdriver

http://62.255.96.108/attachment.php?...1&d=1693570891

once done offer the trim up to the door and with all clips aligned push on and slide toward the front of the door. the trim will then lock into place.

I make that sound simple, its a bit fiddly as each of the clips needs to be exactly lined up art the same time. However with a little patience its doable.

When you've done that, put the self tapping screws back from the inside and replace the internal trim cover. It just snaps into place

Pretty sure that's exactly what I had to do not that long ago; thought I'd documented it here (as mentioned above), though definitely not in so much detail. :o