A black encrusting fungus on dead deciduous wood.
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.
Going solely by your photo it looks very similar to a find I have made previously, Chaetosphaerella phaeostroma, however you would need to examine it more closely to get a definite ID.
Thanks Bogey I have been at a loss when trying to ID similar looking finds.
All given ID's are subject to error/ommissions. Please seek independent verification before acting on ANY advice given. BE SAFE =)
Lat/Lng: 51.3371, 0.118
OS grid ref: TQ476619