Who is "Mr. Z"?

A few years ago, I posted about a judge in New Zealand who just didn't understand the Internet. It turns out, they grow their judiciary pretty dense in the UK, too. Apparently, Sir Fred Goodwin, former chief of the Royal Bank of Scotland, has won a "superinjunction", preventing anyone in the UK from revealing that he is "Mr. Z", the plaintiff in a libel case. Yeah, like that's going to work out.