Green Lichen? Or Algae? I think this is Lichen, there were also some grey Foliose Lichen in with it. On a wall facing SE.
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.
Lat/Lng: 53.0060833, -0.4168435
OS grid ref: TF063465
Rural location in a garden.