Deciduous woodland garden habitat, where woodchippings have been spread to mulch area's adjacent to paths.
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.
I'm sure I've seen a photo rather like yours of a troop of purple mushrooms with pale rounded margins... but I can't relocate it just now :-( I keep thinking of Plums and Custard, but they are covered in yellow covered with purple scales... hopefully an expert will put us out of our misery on this, or I might find that other photo!
Thanks for the suggestion. I've googled Gymnopilus dilepis, & the photographs are mostly of more advanced fruiting bodies. One or two photo's do look tantalisingly similar to my photo - how frustrating?! Your Plums & Custard looks like a good lead. Thanks so far.
If you can try and photograph the gill's and stem as close up shot's would help confirm narrow down to genus.
These couldn't be a rather purply version of Clitocybe nebularis could they? I thought of them when I looked at http://www.ispot.org.uk/node/237461...
Finally found the picture I had in mind - of Cucumber Caps.
Did you notice if they had a strong smell of a mixture of raw fish and cucumbers?
Lat/Lng: 52.17371, -1.54538
OS grid ref: SP311529