European ministers are in Berlin discussing how to proceed without the UK in the EU.
The original 6 founding nations of the union are holding talks in the German capital.
Germany's foreign minister Frank-Walter Steinmeier says it is vital that the rest of Europe pulls together:
Meanwhile, president of the European Commission Jean Claude Juncker wants the exit process to begin "immediately".
The French president Francois Hollande says it needs to be done sensibly: