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.
This Lichen was found on a Sandstone boulder in my parents garden.
I have noticed that this type of lichen favours sandstone maybe because it forms a better bond to it as opposed to brickwork in the same area which is covered in moss.
Unfortunately, photographs of crustose lichens need to be close and to show pin-sharp detail if they are to be identified. (And even then, chemical tests are often needed.)
I don't think it is possible to speculate on this. Sorry.
Perhaps you can try again?
Lat/Lng: 53.3682, -3.1581
OS grid ref: SJ230863