Market Wrap: UK-specific worries about Theresa May's Brexit speech tomorrow and Donald Trump's inauguration on Friday worries investors

Simon Rose brings you Market Wrap, a roundup of what's been happening in the bourses and businesses of Britain and the world. To help contextualise the day's events, Simon was joined by Share Radio's senior analyst Ed Bowsher - they talked about why the pound has fallen as far as it will go, ahead of a much-anticipated Brexit speech from the Prime Minister tomorrow, the International Monetary Fund raising its forecast for the UK's economic growth this year, and looked at companies including why the value of emerging markets fund manager Ashmore's assets dropped $2.4bn at the end of last year.