The Government haven't even said this is going to happen. As far as I can tell it's come about as a result of a leaked conference call to industry on Saturday morning. It's probably useful to have a guide to UK policy making:
1. Daily Mail starts rant about something usually connected to foreigners/immigrants/brown people or all three (ie Meghan Markle).
2. Government floats idea for radical policy in the media or to industry
3. Wait for further high brow analysis from the Daily Mail to see if there's a positive or negative reaction.
4. Depending on outcome either issue denials or proceed accordingly.
In this case, I see they're already denying it, so I'm going to assume it's not happening. If it does happen, it will be too little, too late now I'm afraid. Britain is riddled and it's come about as a result of Government dithering. I think you really have to wonder what is going on when even Greece is looking at us and thinking "WTF"?