No interactions present.
For comparison see Forest Shieldbug:
and Green Shieldbug:
on the excellent British Bugs website.
Entomologist and biological recorder
Whatever they are they seem happy enough anyway!
Michael, I agree they look like Green Shieldbug, but judging by the photos on British Bugs (links above) they also look very like Forest Shieldbug, is there a way of telling them apart?
They do indeed look similar. July does seem a little early for eggs of the Forest Bug, which only becomes adult in July, after overwintering as a nymph, but an expert in the group, which I am not, may know better.
Lat/Lng: 51.7525, -1.244
OS grid ref: SP522062