The Mayor's suggestion that we are heading for a "mini Ice Age"shows that he does not understand the basic science behind global warming.
In a dramatic shift, both the PM and the Mayor now speak of EU withdrawal as a reasonable option.
The Mayor's demand for an EU referendum before 2015 means it will be harder for Cameron to impress.
The Prime Minister has appointed the election strategist who guided Boris Johnson to victory to his own team.
David Cameron and George Osborne agree with Boris Johnson on one thing at least: the Tories should pay Lynton Crosby “whatever
he wants” to become their election strategist. So what is it about this rough-tongued Australian that so appeals to them?
Boris Johnson on the Newsnight scandal.
Mayor of London says the Tories should "push the boat out, break the piggy bank, kill the fatted calf" to secure the services of his campaign manager.
Mayor of London tells supporters of a third runway: "you're completely wrong, you will be defeated".
David Cameron’s rivalry with Boris Johnson is perhaps the most fascinating relationship in British politics. How has it evolved over the decades since the pair were at Eton? And which of them will triumph in the end?