David Cameron touched on the European question during his speech at the World Economic Forum in Davos, insisting that his EU policy was "not about turning our backs on Europe - quite the opposite".
This is about how we make the case for a more competitive, more open and more flexible Europe and how we secure the UK's place in it.
Setting out his case for reform of the EU, Mr Cameron added:
It is not just right for the United Kingdom, it is necessary for Europe. Europe is being out-competed, out-invested, out-innovated and it is time we made the EU an engine for growth, not a cause of cost for businesses and complaint for its citizens.
To the surprise of many Lib Dems, Nick Clegg appears to have played down the importance of the Coalition's divide on an in-out referendum.
Business leaders in Davos are worried about the Prime Minister's pledge to put Britain's membership of the European Union to a referendum.
With some in France keen to "roll out the red carpet" for a British exit, Germans favouring decentralisation welcome EU renegotiation talks.