White crustose lichen with red spots on a wall
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.
It looks more like Baeomyces rufus which grows on sandstone rocks but I cannot get a clear picture of the fruiting bodies.
Lat/Lng: 51.2, -0.6
OS grid ref: SU9949