Possibly Cordyceps militaris.@4cms tall.
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.
Good find! Grows on caterpillars
The more I know the more I realise I don't know
You are right with C militaris.
Lat/Lng: 51.9768, -4.588
OS grid ref: SN223340