Well currently i believe that adopting the euro would be disasterous for the uk, because of the various differences between the eurozone and the uk.
But, i am not against the euro altogether. I do believe that britain, when the time is right, should adopt the euro, but, just about the only thing i believe the government has done well at is in the economy, losing control over things now would send britain into a slump, and possibly even a recession. This should be by all methods possible be avoided.