The pound is being sold again as Cameron prepares to talk at Davos

GBPUSD has fallen in a rush to test good tech support/demand around 1.4115. Further support/bids behind that at 1.4100

Euro demand is adding weight as EURGBBP surges to 0.7736 before capping.

Talk on the street is all about Brexit again as UK PM Cameron steps up at 13.00 GMT to deliver his Davos speech.

He's expected to outline the risks of Brexit and urge business leaders to back him

According to released speech text he will say:

If you believe like I do that Britain is better off in a reformed EU then when the time comes, help me make that case for Britain to stay"

This is a once in a generation moment - and the stakes are high

Seems like Cameron sees his chances slipping away. Equally the markets are in feeding frenzy mode