Not sure if a species can be given but interesting anyway
No interactions present.
There's a good illustrated guide to the different instars here: http://www.britishbugs.org.uk/heteroptera/idcards/life_stages.html
Thanks for your comments and the useful ID guide, wow that's useful
I'd made an error with this and agree with dshubble's revision - well done to him for spotting this - I've not seen a green P. rufipes before. Looking again I think the flaring of the thorax give this away.
In addition to morphological features, date (late May) is much more likely for P. rufipes which overwinters as an early instar nymph.
National Recorder for Terrestrial Heteroptera (shieldbugs & allies)
Lat/Lng: 52.2, -3.4
OS grid ref: SO0560