This one had a double “star” layer attached to it.
Growing in wood chips.
Growing on wood; Similar to Aleurodiscus.
I had no literature on mushrooms with me; So, I decide to apply the key provide by
British Mycological Society - https://www.britmycolsoc.org.uk/ :
PATRICK LEONARD: SYNOPTIC KEYS TO BRITISH SPECIES OF LACTARIUS, 2008
The answer from this key was: Lactarius vellereus
Application of the key
A H J L R V Y
| | | | | | |-> Y [Broadleaved trees -Habitat]
| | | | | |-> -> V [Other weaker smells including acidic, fruity or none - Smell]
| | | | |-> -> -> R [Un-zoned - Cap markings}
| | | |-> -> -> -> L [Cream and pale buff or pink colours]
| | |-> -> -> -> -> J [Smooth - Cap edge]
| |-> -> -> -> -> -> H {Mild - Milk Taste]
|-> -> -> -> -> -> -> A [White and unchanging - Milk Colour]
Key 7 AHJL RVY
Cap predominantly white or cream 2
Cap rusty tawny, cinnamon, or brick 3
Cap viscid, stipe soft to firm pallidus 74
Cap matt, velutinous, stipe hard vellereus 252
Growing on a living pine (halepensis) tree.
Everything I found. Red & white pines. Microscopy. Spores approx. 3.1-3.8 with ornamentation, which seems minimal. Vouchered.