Prime Minister David Cameron has said the UK must "build a better economy" that is fair and worthwhile.

Deputy PM Nick Clegg and Labour leader Ed Miliband have also made speeches on the faults of unrestrained free markets.

But, the Marxist historian Eric Hobsbawm told Newsnight's Jeremy Paxman that capitalism was concerned only with growth and making profit, not responsibility.

Broadcast on Thursday 19 January 2012