"If I and others set up a cross-party campaign for an In-or-Out referendum... do you promise to join?"The operative word here, of course, is 'if', but it does seem to suggest that there maybe plans afoot. I would, naturally, join in an instant and more besides.
Update: I wonder if this new website, campaigning for a referendum, has any relevance to Dan Hannan's comments? hattip: eurogoblin