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.
The first thing we need to know is whether the lower surface had pores or if it was smooth. If it had pale smokey gray pores it could be Bjerkandera adusta. If there are signs of purple it might be Chondrostereum purpureum but it could also be Trametes versicolor.The one thing we can say is that this is not the Sulphur Polypore.
Lat/Lng: 53.7722, -1.9109
OS grid ref: SE059306
woodland planted circa 100 years ago surrounding reservoir