From my Menai Bridge garden.
No interactions present.
Looks like a Phyllonorycter species, but there are rather a lot to choose from! One possible candidate is P. tristrigella (which mines the leaves of elm):
but there are similar species.
Entomologist and biological recorder
Lat/Lng: 53.223417567311, -4.1637325286865
OS grid ref: SH556717