Dark green foliose lichen growing on a dead and fallen tree trunk.
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.
... but a slug-chewed or decaying regular (non-lichenised) fungus gets my vote.
gets my vote too.
Trametes pubescens quickly gets eaten like this (sort of slugs' equivalent of fillet steak) [or maybe cod and chips]
Lat/Lng: 51.5463, -3.2236
OS grid ref: ST152837
within the woods from the main car park. Following the path down the slope and then crossing an area to a very large dead tree which had been uprooted.