Apparently the global credit crunch means we should be looking to give up our currency - although the way Labour are going it's becoming increasingly worthless anyway. This conveniently ignores the view expressed by many leading economists that whatever you think of the government's measures, a British government would have been completely hamstrung (like Ireland has been) if it had been part of the euro.
As William Hague has said this morning:
Keeping the pound is vital for Britain’s economic future. We need interest rates that are right for Britain, not the rest of Europe. There are no circumstances in which the next Conservative Government will propose joining the Euro. If Labour ministers still want to get Britain into the euro they should come out and say so. We will be putting questions to the Government to find out what conversations have been going on.