Not really sure which species this is so any comments will be great, many thanks. Found along the coast on a rock.
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.
Candelariella vitelina (mentioned above) and C. coralliza are similar, but are brighter yellow and have rounded granules. As Gardener says, they do not react with KOH.
Lat/Lng: 54.2135, -0.2819
OS grid ref: TA121811