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.
If its 'a white lichen' its not going to be a Caloplaca - with the exception of C. teicholyta which has lobed margins.
The yellow ones in the second photo are a Candelariella or Caloplaca but you'd have to test for the K- or K+ reaction to distinguish them.
The brown one might be a Verrucaria but can't see details clearly enough.
Incidentally the moss looks rather nice in the second image and might be Tortula muralis so you could use the same image for a second observation!
Lat/Lng: 53.9, -1.1
OS grid ref: SE5951