On the outside of an isolated building.
Edit: changed to match inopinatus' ID. Many thanks.
No interactions present.
Neither grandis or lunatus, not sure what family but not Limnephildae or Phryganeidae
Ian Wallace, UK Trichoptera Recording Scheme
Lat/Lng: 55.4737, -3.2026
OS grid ref: NT240206
On isolated building.