Othercountries were slow to followsuitnotbecausetheywere stupid, sluggish or repressed, butbecause they did nothave that particular combination of expensiveLabourand inexpensive energy.
And Labour MP Kate Hoey, one of the party's leading Eurosceptics, said Mr Cameron had been "absolutely right" to offer the public their say over the issue and she expected Labour to follow suit in due course.
The single currency would change Europe's labour markets because it would make it harder for governments to adjust macroeconomic policies to suit circumstances in their own economies.