PMQs: Bercow 'very grateful' that Cameron has finished
The prime minister told noisy MPs he was implementing a Labour policy and wanted to carry on his explanation, as he told the Speaker: "Hold on a minute."
But John Bercow closed the exchange when he said he was "extremely grateful" David Cameron had finished his answer.
And he moved on to a backbencher without allowing the PM time to expand, saying progress had been very slow in the session.