Actor and campaigner Hugh Grant has told the BBC's Andrew Marr Show that the Conservative-backed Royal Charter does not "do the Leveson proposals at all".
He said it was "cunningly designed" to encourage a return to the old system under the Press Complaints Commission, and accused the Prime Minister of trying to earn favours with the British press.
David Cameron has insisted a cross-party agreement for a new system of press regulation protects the principle of the free press.
Labour says this is just the sort of legal under-pinning they were looking for but the Conservatives say that no such press law will exist.
Is there a chance tomorrow's Commons' votes on press regulation may not go ahead? Could there be agreement between the parties after all?