The grey lichen which AlanS suggests is Degelia cyanoloma but will let him put name in.
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
In good company here, with Lobaria virens to the left and L. pulmonaria to the right.
Thanks, looking at the other examples of Degelia cyanoloma it does look a very fine lichen.
Lat/Lng: 57.131904722222, -5.9717419444444
OS grid ref: NG597115