What he is saying there is that a Leave vote means that we will leave, no more than that. I voted in the Referendum believing that and I still think the Leave vote should be respected and we shouldn't have a second vote on the subject. However, what Cameron is not saying there is that a Leave vote means we definitely leave on WTO terms, which is the line being trotted out now by those who want us out with no deal. If there's a customs deal, a Norway type outcome, Common Market 2, Canada type or whatever, the result is the same, we will leave the EU, which is what the 17.4 million voted for.