Lichen found on vertical wall in mortar between bricks
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.
The yellow apothecia are possibly Candelariella aurella but you need to test to see whether you get a K- reaction to be certain. The other crustose lichen with yellow discs are Caloplaca species, they give a K+ crimson result.
Not sure about the brown discs, I'm wondering if they could be the same but parasitised by something.
A lot of crustose species can be difficult enough to ID in the field and I'm afraid I'm just not experienced enough to be too much help with most of them from photo's.
Lat/Lng: 52.6, -2.5
OS grid ref: SJ6803