Peugeot 207 - Removing interior panels on hatch door

[ChasW]

I have isolated a really annoying rattle in my daughter's 207 to around the area where the motor for the rear wiper is located. I am trying to work out how I remove the interior panel to investigate if something is loose. I can't see any fixings, ie bolts or screws, at all. Is this just a one piece snap-on/snap-off plastic panel? I am reluctant to start forcing it off in case I am starting in the wrong place and do some damage. Any advice would be welcome.

[OvalOwl]

The interior trim panels are largely held on with hidden plastic plugs. There might be a couple of screws hidden under the upper trim pieces either side of the window. These are held on with three plugs each. one of those forked trim removers will come in handy.