Growing on south facing side of tree in a car park
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 P. tenella the young lobe tips are often somewhat hooded before the tips turn back to give the "lip-shaped" soralia. That is what we see here. So not P. adscendens in my opinion.
Lat/Lng: 51.4467, -2.6217
OS grid ref: ST568721