Chancellor Gordon Brown will reveal today the government's decision on whether the UK is ready to join the euro. In an historic announcement in the House of Commons on Monday, Mr Brown is expected to tell MPs the economic conditions are not yet right for the UK to ditch the pound and sign up to the single currency. He is set to say that while he is in favour of Britain joining the euro in principle, the five tests he set in 1997 to assess the currency have not been passed - putting a referendum on the issue on hold. BBC reported the big question will be whether the chancellor rules out a poll before the next general election.