Growing on a tree stump, enriched by bird droppings; on the upper surface, but also in crevices on the sides.
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.
I followed a number of links. It matches them all.
My favourite Lichen Site
MARINE, MARITIME AND OCEANIC LICHENS
'What is not shared is lost'
Lat/Lng: 51.4727, -0.0001
OS grid ref: TQ389767
Grid reference TQ 38995 76754; on a sawn-off tree stump.