Thanks for the replies, the photo ws very helpful.
I didn't realise that the interior setup was different depending on the age for the four door rear arch panels, other than the 'aluminium former' which was chrome on later cars (such as mine).
I did wonder if they'd be the door card clips but I couldn't see them through the gap between the body and the liner and I didn't want to go pulling excessively at them in case they weren't
