Lichen found at perimeter of meadow where cut back branches are cast aside from meadown to manage the meadow.
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
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It would seem that I need to take close up views as not all is visible. The lichen was under the shade of trees at the boundary and would appear that the area is always damp.
I was going to say that there is no such thing as Physalacria, but it turns out to be a rather strange genus of tropical toadstools. Not a lichen!
You are right that you need closer views. The yellow is Xanthoria parietina, but there may be four or more species amongst the greys - none quite clear enough that I am willing to suggest names.
Looks an interesting old branch - worth re-photographing if you get the chance.
Lat/Lng: 52.411811, -1.77761
OS grid ref: SP152793
Seems to be lichen on deadwood after management.