Hain also urged shops to welcome the euro notes and coins, to be launched in 12 European Union countries on 1 January, and to price their goods in both euros and sterling. He dismissed many of the opponents of the project as 'nutters', and a 'rabble' led by Tory leader Iain Duncan Smith. However, Hain denied that Prime Minister Tony Blair had already decided to call the referendum he has promised if the Government decides Britain ought to go in.