Cameron never joins the Euro. Where have I heard that before?

David Cameron has given an interview to the Express in which he says he would "never" join the euro, if he were Prime Minister.:

"I was in the Treasury when we were in the Exchange Rate mechanism, and I said to myself: "Never again should we give up control of our domestic interest rates." If I am Prime Minister and for as long as I would be Prime Minister, I would never take Britain into the euro, full stop, end of story. We should never have got ourselves into the financial mess that we are in but at least we have the flexibility of our own currency and our own interest rates."

Click here for the story about David Camerons Iron clad guarantee on the Lisbon treaty. So Mr Cameron I don't believe a word you say.