Alright Lady Ga Ga I'll bite.
I would not consider it accetable for my horses to kick me or to attack an animal while I am in the paddock. I have dogs, cats, ducks in my paddock all the time. I even have a dog that likes to "play" with the horses by chasing. They don't do that when I'm in the paddock.
My gun is a lot more effective than a hoof or teeth. They can also run away from the supposed "wild dog." They can do this without hurting me. In fact my horses do get scared, spook, do a 180, and run away while I am in the paddock right in the middle of them. They do not however run me over or run into each other. I'm fairly certian that their eyesight is good enough for them to see me and I know their aim is good enough to avoid me.
I'm not sure how many wild dogs you have running around in the UK, but here in the wilds of MN we've got a ton of coyotes and I wouldn't expect my horses to try and kill it while I'm there. If I allow it to happen is one thing, happening because they decide it's ok is another thing entirely. When I'm riding my horse isn't allowed to attack dogs either. UNLESS I point him at the dog and tell him to "get it."
Now can you please answer my question "2nd ETA- Lady GaGa, I'm curious as to what your response would be here. Does it differ why the horse is kicking? How would you behave differently with the different horse reasons? "