PMQs: Cameron and Miliband on energy bills and policies
30 October 2013 Last updated at 13:34 GMT
Ed Miliband accused David Cameron of moving from "Rambo to Bambi" in a few years with his policies towards the energy companies.
And he claimed the so-called "big six" energy companies should be renamed the "big seven", as the prime minister was their "unofficial spokesman".
But the prime minister claimed the Labour leader - who had attacked government advice to change suppliers - had recently swapped suppliers himself.