I've only tried to ID this with online keys but not succeeded.
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.
Thanks gardener, I have looked Phaeophyscia orbicularis up on lastdragon.org and it's a convincing match.
Lat/Lng: 52.05551, -0.7195
OS grid ref: SP878404