Villiers: Why Brexit would help business

In a letter to The Times 198 business leaders have expressed their support for remaining within the EU. The bosses of companies including Asda, BT, Marks & Spencer, Kingfisher and Vodafone chiefs warned of the risks to the economy of a British exit.

The Northern Ireland Secretary Theresa Villiers is one of David Cameron's ministers who is advocating a 'leave' vote in June's referendum. She told Martha Kearney on the World at One why leaving the EU would be good for the economy.