Insurance will sort it if you have windscreen cover(fairly normal to have these days), normally will cost you £50-75 on excess.
Phone Autoglass and they will do all the paper work. You do not need to phone your insurers at all.
All you have to do is tell autoglass where to go to fix it, your name and reg. and confirm who your insurance company is.
And no i dont work for them!
Otherwise, it'll be hundreds.