Mr Duncan Smith said: “Actually, if you look across the European Union, many of those countries now are quite desperate to sort out the relationship with the UK.
“For example, Germany is going through quite a difficult period right now, their manufacturers are deeply worried about what will happen afterwards, and they want to find a way to make sure that they don’t end up having tariff barriers imposed on them as they export.
“That, of course, is possible to arrange even under the WTO process.
“What they want is, and we want, the bottom line is tariff-free access to the market and for them to do the same for us.”
Senior figures in the EU are already making it clear they fear a quick hard exit from the EU by Britain meaning the loss of its £10 billion in net contributions over night.