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.
As often with Usnea, I don't think ID beyond genus is safe from the photograph. It is probably U. cornuta or U. flammea, but identification depends on small, critical features and is often not easy even with a specimen in hand.
It is not, however, U. 'filipendula' (British material is actually U. dasypoga), which is a distinctive species with long, pendant thalli with "herring bone" branches.
Lat/Lng: 50.2, -3.9
OS grid ref: SX6743