"Costs Labour cannot quantify"

We may have an opinion but all we know so far is that the way the policies are to be paid for has not been leaked; the text of the manifesto has been leaked but if i was producing it the text would ne in Word or equivalent and the costs in Excel or similar. There is no inherent reason that people who had access to the one would also have a copy of the other.

So when it comes to costs all we can say at the moment is "not proven". We have been promised costs in the full manifesto in a few days. It is silly to argue about costs until then.