Unlikely, but not impossible
Well, its not easy, given the anti-European bias in British media & politics, though the current economics make it more likely as the pound has fallen to almost parity. Moreover, the poor regulation of the US & UK’s financial markets caused the ongoing financial problem, and the Euro governments pushed for better regulation & scrutiny of the derivatives market – allowing the debt bubble to build up. The best way to have the pound in the Euro is if the pound decreases to approximate parity with the Euro for a protracted period, and have British merchants decide to accept the Euro on 1:1 basis; if the Euro becomes obviously more stable than the Pound then politicians could decide to recognise the facts on the ground. Alternatively, with growing devolutionary powers, Scotland could decide to hold a referendum on Euro membership and decide to accept it, which would give considerable momentum into joining the Eurozone within the UK – not to mention a bona fide political crisis within the UK itself. Mind, both of these scenarios are still fairly unlikely to come about – though not entirely impossible (
http://news.bbc.co.uk/1/hi/scotland/7809700.stm)S</p></p>