A tiny (2-3mm) fluffy fly - it looked like a diminutive moth.
No interactions present.
I'm trying to get some sort of id for these sorted out from photos, which is rather tricky (and may be impossible) - but it's an interesting exercise. :o)
This one has the broad pale bands and dark wingtip that seems to be typical of a lot of Pericoma species. That's only a starting point, and not an ID though.
Lat/Lng: 57.14307, -5.80304
OS grid ref: NG700122
A garden near a small woodland. Also quite near the coast.