Hello,
Not sure it it's still helpful but I have bought some parts frm this company in Germany.
https://www.bildelaronline24.se/
or their UK website
https://www.buycarparts.co.uk/
I think it's the same company shipping parts from Germany.
In Sweden there is also a website where all the junk yards post ads of spare parts. It's resonably well organized and most parts are quality categorized. Be warned that some used OEM parts don't come cheap compared to aftermarket parts.
http://en.bildelsbasen.se/
Hope this helped.
Tenil.