It is being dubbed the 'Cadbury Law'. And it is coming to a manifesto near you. But what is it?
It's Gordon Brown's promise that the future takeover of any British company will be scrutinised... like never before.
Now, hasn't the government made promises about these "touchstone" issues in the past? Didn't they tell us that the House of Lords, for example, would become a wholly elected chamber?
Well, party insiders are saying: "Yeah, but this time its different."
What they probably mean is: "It's election time again."
Or could it be, the bad press generated by the chocolate factory takeover has left poor Gordon feeling like a bit of a Charlie?