Possibly Cauliflower Fungus
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.
How big was it and was it at the base of any specific tree?
it is cauli. actually today i saw about 6 of these each on a different on Pseudotsuga menziesii (I think) tree, it seemed they were very common in one small area but all past their eat-by date!
I agree that it is Sparassis but the leaf litter looks deciduous which seems to suggest the very rare S. spathulata...
Actually these cauliflower fungi often occur right up close to the conifer trunk BUT can also occur some distance away. There is one near here that some years is right by the conifer and other years is at least 7m away and under the deciduous trees.
Lat/Lng: 50.0836, -5.2848
OS grid ref: SW651255