I found this growing on sand dune near Gun Hill, Burnham Ovary Staithe in Norfolk. It is 6cm in diameter, has gills and no veil.
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Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
Your fungus resembles the pic in 'Jordan' of Inocybe serotina, which is to be found in dunes. Without spore print I would leave it at Inocybe.
If it is Inocybe then only I.serotina fits with habitat, this does not have usual broad Umbro.
was there any Willow trees nearby?
All given ID's are subject to error/ommissions. Please seek independent verification before acting on ANY advice given. BE SAFE =)
Thanks for the feedback. What is the relevance of the willows? In answer to your question there were no trees nearby. The only woody plants nearby were wild privet and they were 25 meters away.
I.serotina is associated with Willow which would strengthen the case for correct ID :-)
Lat/Lng: 52.971, 0.767
OS grid ref: TF859450