No interactions present.
The angle of the basal cross line seems obtuse which suggests this species rather than Lesser Treble Bar but I find this hard to judge on a photo. Do you have a picture of the abdomen?
Sorry David, but no I haven't got a pic of the abdomen.
Lat/Lng: 51.2997, -0.1835
OS grid ref: TQ267571
Chalk grassland SSSI with considerable scrub (dogwood)