PMQs: Caroline Lucas told off for climate change poster

An MP was told off by the Speaker for holding up a poster when she about climate change at prime minister's questions.

Caroline Lucas asked about the prime minister's attendance at a summit later this month, before holding up the poster.

But John Bercow said this was "disorderly" and if all MPs did the same, it would "make a mockery of this place", before William Hague replied to the Green MP.