Fungus <10cm across. Growing in leaf litter of wet oak/birch woodland. Sorry about poor photo!
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.
It looks to me like Russula claroflava, which grows with Birch - but there are others it could conceivably be, too.
Worth a punt, though.
I would go for Russula as genus but very hard to narrow these pesky ones down without the right gear.
Lat/Lng: 54.0468, -1.012
OS grid ref: SE647616