Rear decals are glued only, or fastened with pins/...?
 

See the things circled in green, I want to remove them if they are just glued on.
Can somebody confirm this? As I've had another car where there were small plastic locator pins with barbs, leaving me with holes in the boot... If that's the case, I'll leave 'em alone.

https://cimg3.ibsrv.net/gimg/www.jag...701286ddda.jpg

Any suggestions on how to remove them the easiest?

These badges (not decals...decals are plastic sheet transfers) are attached with two-sided tape so there are no holes. If you heat the surface you can remove the badges quite easily.

And slowly use a length of dental floss looped to "cut" through helps.

Thx!