Britain would gain more from leaving the EU than it would lose, billionaire entrepreneur Sir James Dyson has said.
The inventor said the idea that Britain could not trade successfully outside the EU was "absolute cobblers".
He said the single market did not work because exporters had to adapt products like his to cater for different languages and different types of plugs.
Britain Stronger in Europe said: "James Dyson wanted the UK to join the euro. He was wrong then and he is wrong now."
Speaking to the Daily Telegraph, Sir James, who is best known for designing a bagless vacuum cleaner, said the UK "will create more wealth and more jobs by being outside the EU than we will within it".
"When the Remain campaign tells us no-one will trade with us if we leave the EU, sorry, it's absolute cobblers. Our trade imbalance with Europe is running at £9bn a month and rising. If this trend continues, that is £100bn a year."
Sir James argued that if, after a vote to leave, the EU imposed a 10% tariff on UK goods, Britain would do the same on imported EU goods. He said that because Britain imported far more from the EU than it exported there, it would bring in an extra £10bn a year for the UK.
EU referendum: Sir James Dyson says Britain better off out - BBC News