Large wedge shaped Fungus attached to a 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.
I think this is unlikely to be Hoof Fungus, as this tends to be much more northerly distributed (usually found on Birch in the North).
In the south, Hoof Fungus is found on beech, but by the shape of this (width in proportion to height) I would think you are more likely looking at one of the Ganoderma brackets, such as G. australe.
Lat/Lng: 51.529951345331, -1.1792385578156
OS grid ref: SU570815
large patch of woodland