Sorry about the photos - focusing poor :( A Cladonia(?) with brown rims on the fruiting cups.
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.
Certainly Cladonia. One for Jenny or Alan methinks. Possibly Cladonia ramulosa, but I have only seen it once, and nowhere near as fertile.
I suspect this is C. pocillum, which has large, ring-like apothecia as seen here. However, there are other features, not visible in the photographs, that I would want to check.
Lat/Lng: 50.9918, -0.7898
OS grid ref: SU850220