Shield bug

Someone can probably tell me what sort.
Another damp and misty day but not too much rain, though it has been raining this evening.
Did parkrun this morning and first in my age category (it would have been hard not to be!) and another couple of miles, as well.
Shopping, with some extras for the freezer, and then a bit of gardening.
More gardening in the afternoon (getting rid of junk) and a bit of general admin. 
I might watch some of the coronation when I've finished the admin.