The missing door piece is clipped.
The missing rear piece is clipped in also,you can see one of the white plastic clips still stuck in the body.
Hopefully the wandering scum ended up with at least a broken front piece,if they wanted a cheapo bit for their own car,or maybe it was pure yobboism.
The rear part: Breaker guy should give to you for a few quid as it will pull off!.
The alternative would be buying a whole bodyshell
I would recommend getting brand new trim clips from renault, less than £1 each.
The door part.the black bit looks ok to me ?
Could easily fill in the damage with some plastic repair or something.Its removal I dont know,meg III you just undo one screw and slide the whole unit backwards..its the bit behind the door thats the pia on mine!
Your real/most expensive problem is the front door piece that had the repeater/clio logo on it
Was the wiring ripped out too?.
See if this breaker person will allow you to strip the rear pannelling off a door to get at the front part or even as mr yobbo did pull it off.
If you try and pull it off you could break the retaining pieces and it could end up useless.
Getting access to the back would be ideal and push it out from behind.
You could do that with the black strip also,but mr breaker may just want to sell a n/s door complete with all bits n pieces and not want it stripped.