What's it called, and where do I get one

[rsims193141]

1992, facelift 4L, manual.
Replaced the headlining, really easy, when i reassembled the trim that goes from the front, over the driver's door along the top of the windows and into the piece at the back, with the rear interior lights (squab?),it won't stay put,ifound some of the fasteners/connectors/holders?had broken and needed replacing. Seeing as I've not a clue as to what they are called ,i don't know where to get them, I've always called them "fir -trees", I'm alone in that,any help would be greatly appreciated.
Is that foam trim bit called a"cantrail crash roll"

[steve_m]

Try these people:

https://www.woolies-trim.co.uk/

[SimonR]

Search eBay for Trim Clips and then compare what turns up with what you need.