Agreed, Les. Ours are different than yours to an extent - maybe of the tribe coreini :
https://en.wikipedia.org/wiki/Coreini
Dock Bugs are sometimes known as Squashbugs, which is a general term applied to the Coreidae group. So, strictly speaking, they are not shieldbugs which is a term applied to several shieldbug families.
Fascinating, Les! How often do you see them?
Only just found them Jim they are in a hedge of blackberries and nettles near the airport where i go see them every time i go there now