The caps were about 15cm across and very fleshy.
No identification made yet.
No interactions present.
Could be Pholiota squarrosa. But the photo is far too dark to tell. To ID most fungi you need a shot of the cap, stalk & underside of the cap..
Does the 2nd photo and added description help?
Lat/Lng: 51.4102, -1.71
OS grid ref: SU202679