cap about 15 cms across.
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.
Have you a closeup of the stem?
i have added another photo that hopefully shows the stem a little clearer.
Lat/Lng: 51.2469, -1.0743
OS grid ref: SU647501