Brussels, 18/06/2001 (Agence Europe) - British Conservative Kenneth Clarke, formerly Chancellor of the Exchequer, called on Prime Minister Tony Blair to rapidly get his campaign under way for adoption of single currency. In a letter published by Britain in Europe, taken up by the English press, Mr Clarke declares that the economic conditions for entering the euro zone will really be met within a year or two. He said that postponing a referendum again until the next parliament would prevent us from having the new single currency before 2010. Such a delay would destroy any real hope of seeing Great Britain become a preponderant and influential member of the wider and enlarged European Union, he said. Kenneth Clarke is in the running as leader of the Conservative Party, opposite Michael Portillo, who is a euro-sceptic. Tony Blair, who has been re-elected for a second term of office, has removed from his cabinet the pro-European members of his former government team. Some analysts explain this decision shows a determination not to scare off the euro-sceptical citizens to avoid definitively damaging Britain's chances of one day entering the euro zone.