No identification made yet.
No interactions present.
if this was Russula chloroides.
What we can see looks right, but sadly without a view of the underside (and a quick peek at the spores under a microscope at x1000), I don't believe we shall ever know.
[Cannot for certain rule out a Lactarius of the vellereus group, but the cap looks too smooth.]
R. chloroides is a common but under-recorded species.
Lat/Lng: 50.5036, -3.7892
OS grid ref: SX732686