David Cameron calls for tax clampdown

UK Prime Minister David Cameron has said that countries must work together to clamp down on tax avoidance.

"Individuals and businesses must pay their fair share," he told leaders at the World Economic Forum in Davos.

He said that "trade, tax and transparency" were the UK's economic priorities.

It comes a day after he called for negotiations on the UK's place in the European Union, followed by a referendum.

Stephanie Flanders reports.