Several brackets up to 30cm x 15cm on a mature Ash tree around an old wound.
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 wonder if the tree is being seriously affected by the bracket fungus.
Sometimes called "white rot". It is one that is more often found on moribund or completely dead trees than on reasonably healthy ones, in my experience.
Lat/Lng: 52.9173, -1.1484
OS grid ref: SK573358