Thomson ReutersPARIS (Reuters) - Britain will need months of preparation before Brexit talks can start, EU Commission President Jean-Claude Juncker said on Monday, chiding the government in London for not preparing better for the possibility of a 'Leave' vote. Juncker, who also confirmed Britain would lose unrestricted access to the internal European Union market if it did not accept free movement of workers, said his preference would have been for Brexit talks to start as soon as possible. "(But) this is not the case.