On red sandstone.
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.
The definition isn't good enough for me to make a suggestion as to what the lichen is. (Close examination with a lens needed.)
However, Caloplaca teicholyta has a thicker, less cracked thallus with a more-or-less lobed margin, the surface often with rounded areas producing dark powdery granules (soredia). It is primarily south-eastern, unlikely to be in a Cheshire churchyard (northern records often incorrect).
I'll try and get another photo as this one was the most common in the graveyard. It was on pratically every gravestone.
There is a familiar look about this thing and it looks like it might have irregular black apothecia with thick, white margins, sunk into the thallus. In which case, Aspicilia caesiocinerea is a distinct possibility. It is often a common species on nutrient-poor ("acid") rocks.
Lat/Lng: 53.0202, -2.7657
OS grid ref: SJ487472