Insect sitting on budleia flower - wings look to be rolled up to resemble twigs.
No interactions present.
Either a Beautiful Plume (Amblyptilia acanthadactyla) or a Brindled Plume (A. punctidactyla). In Scotland the Brindled Plume has a near white thorax and tends to be paler than southern specimens.
Lat/Lng: 57.3, -2.1
OS grid ref: NJ9530