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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Migrants trying to get to Britain made a mass attempt to break into entrance to the Channel Tunnel near Calais in France late Saturday.
As the story of Downton Abbey begins to wind down its executive producer has offered hope that a follow-up film is at least a possibility.
A Church of England bishop has criticised the PM for his controversial description of migrants seeking to come to the UK as a "swarm".