David Cameron will call for greater international cooperation on tax evasion in a speech to the World Economic Forum at Davos.
The Prime Minister will urge leaders to work together and tackle tax evasion by multi-national companies and the super-rich.
Mr Cameron will make the issue a key focus during Britain's presidency of the G8 leading economic powers.
A Downing Street spokesman said he would not be talking about Europe in the wake of his landmark promise of a referendum.
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Rain will clear eastwards through Sunday but it will remain blustery.
Donald Trump has indicated he does not intend to block the release of thousands of secret files about the assassination of John F Kennedy.
Storm Brian will track off into the north sea later tonight. Blustery tomorrow.