EU referendum: Brexit bad for UK, Europe and the world, warns OECD

Organisation's chief economist dismisses Boris Johnson's argument that long-term benefits of leaving outweigh costs

The west's leading economic thinktank has provided backing for David Cameron's pro-EU stance by warning that a UK vote to leave the union would cause lasting damage and would harm the rest of the world.

Catherine Mann, the chief economist at the Organisation for Economic Co-operation and Development, said a vote against remaining in the EU would be "bad for the UK, bad for Europe and bad for the global economy".

Related: The EU referendum: a guide to the UK's biggest political decision of the century