No identification made yet.
No interactions present.
First thought is Leptogium gelatinosum, but need microscope work to prove it is not a Collema (as the genera are traditionally defined).
Whatever it is, I photographed the same thing two days ago, but I am not naming mine until I have checked it, so same applies here.
These things are tricky (though several are in the queue for my website).
Lat/Lng: 57.0004, -3.4083
OS grid ref: NO145907