Hi Ant.
The clover is white clover and perfectly fine. The blue/purple flower is Campanula and again, both leaves and flowers are edible and safe. The white bindweed is fine, as is the nipplewort in the photo below it.
As for the others I can't identify at a quick glance without my flower books to refer to but I'm sure someone else will be able to help.
In the meantime you at least have some nice edibles for Percy.
