The red in the photos was closer to orange in reality.
No interactions present.
The first Buckinghamshire record for this bug was only a few years ago, but it seems to be spreading and has been seen several more times since. Even so, yours is probably only the 6th or 7th county record!
Entomologist and biological recorder
Lat/Lng: 51.5, -0.8
OS grid ref: SU8487