Spangle galls on oak leaf - but what are the black furry bits?
No identification made yet.
No interactions present.
these look like the shed skins of a moth larva to me
I agree. Certainly invertebrate rather than plant anyway, so I've changed the group for you to the former.
University of Edinburgh and Biodiversity Observatory (OU)
Lat/Lng: 51.5, -2.6
OS grid ref: ST6282