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.
Inocybe geophylla var. lilacina, Lilac Fibrecap/ This is said to be a woodland species, though.
If so, it should have a mealy smell, and if you touch your tongue to it (don't eat!), should have an unpleasant taste.
Whatever it is, it's very pretty!
Looks more like Hygrocybe conica to me. A bit washed out, but the one behind looks the part.
Lat/Lng: 51.3786, -2.513
OS grid ref: ST643645