PMQs Harman and Cameron on Heathrow Airport expansion
Harriet Harman asked the prime minister if he would "stand up for Britain's interests or be bullied by Boris" as she spoke about the Airports Commission's recommendations for airport expansion around London.
The Labour leader claimed there were divisions in the Conservative Party, as she teased that the London mayor Boris Johnson should be told he was "not the leader of the Tory party yet".
Mr Cameron said it would be good for her blood pressure if she did not believe everything she read in the newspapers, as he spoke of child poverty figures which turned out to be better than had been predicted.