Apprx 3.5cm diam
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.
Hebeloma of some kind
I'd just independently come to the same conclusion of Hebeloma, a Poisonpie. A spore print should come out brown. Do you remember if the cap was slimy?
I'm afraid I don't remember - Poisonpie does sound nasty. I haven't tried getting spore prints yet though I will certainly try one if it shows up again.
Thanks for the comment!
Lat/Lng: 53.0, -1.5
OS grid ref: SK3648