light green in colour with narrow small pipe-like growths similar to some sea coral. Growing on an old apple tree.
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.
Maybe Cladonia fimbriata?
C. fimbriata is one possibility but I think there are others it could be, and I'm not certain that they can be reliably separated from a photo, though I could be wrong - any Cladonia specialists out there?
Have a look for comparison. Looks quite similar to me! But I should admit I am not a specialist.
Cladonia coniocraea is frequently found on trees, even in somewhat polluted areas.
Have a look at Alan Silversides photo and details for comparison:
Lat/Lng: 51.3, -0.9
OS grid ref: SU7760