Unfortunately, I didn't get a great view of this moth before it disappeared. It looks like a Crambus...maybe lathoniellus?
No interactions present.
thanks for your thoughts, Richard - they're really helpful.
The white streak in C. lathoniellus runs from base towards TERMEN, not the dorsum as I said above.
Lat/Lng: 50.6857, -1.5262
OS grid ref: SZ335874