Phylum: Basidiomycota Family: Amanitaceae
Amanita vaginata (Bull.) Lam.
Grisette
Widespread but not particularly common. Mycorrhizal with broadleaved trees
References:
Kibby (2012) The Genus Amanita in Britain
O'Reilly (2016) Fascinated by Fungi
Overall (2017) Fungi: Mushroom & Toadstools of parks, gardens, heaths and woodlands"