Hi, I'm stumped by this one. Found in Atlantic upland woodland (I forget microhabitat but can check) and a common species I'm sure
No interactions present.
I am not completely sure of the id as P. purum as the leaves appear curved, though this may simply be due to drying, and also the left hand image seems to contain plants that may be pinnate...
Lat/Lng: 50.5, -3.9
OS grid ref: SX653684