Boot Trim Removal

[CatalystV12V]

I'm trying to remove the boot trim/panels in my V12 Vantage S and I'm not sure how to remove the small vertical panel thats below the parcel shelf, see poor picture attached.
I've loosened the large panel that seems to sit underneath it, but that panel seems to wrap up behind this smaller one and I don't want to force it incase it tears.

Any help / pointers much appreciated.