European Union (Amendment) Bill

The right hon. Gentleman seems to be extolling a new potential Conservative policy when, in response to the hon. Member for Stone, he talked about a new constitutional safeguard. Does he mean the possibility of using article 49A, which, as he knows, gives member states a right to secede from the Union, or does he have something else in mind—possibly something that he might wish to renegotiate with our colleagues if he were to pull out of this treaty?