Re: "fair use rights s"?
"Sorry to be a bore but I'm not sure that applies in British law."
Sorry to be a bigger bore, but there is no such thing as British law. There are three separate legal systems in different parts of the UK.
Anyway, there's nothing in the article that suggests that Greenwald's blog is covered by any UK jurisdiction. If you'd bothered to look at the blog, you'd have seen that it appears to come under the laws of the state of New York. So El Reg's comment is valid and yours is irrelevant.