On Oak. I think the left-hand lichen is Parmelia sulcata (though very, very possibly wrong!) and I have no idea about the right-hand one.
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.
Thanks for the ID. I'm starting to get the idea that I may be improving, if only slightly.
Lat/Lng: 54.3607, -0.5439
OS grid ref: SE947971