The original Dyson dual cyclone cleaner

"Why should we go on exporting at a loss," he says. "We're facing unfair competition."

While Mr Dyson in February revealed his pro-euro sympathies, the commments were made before his company opened a Malaysian plant, now responsible for 5-10% of output.

Dyson Appliances also on Friday revealed its entrance into the £13.7bn world washing machine market with the launch of the mould-breaking Contrarotator model. The company hopes the machine will support the creation of 1,000 jobs.

Firms including Nissan and Sony have voiced concerns over the strength of the pound in reviews of company activity in the UK. Nissan is set to decide the future of its highly-praised Sunderland plant by the end of the year.

Anti-euro campaign

But anti-euro business leaders, who have stepped up their campaign to keep Britain outside the eurozone, gained cheer from Denmark's rejection of the currency in a referendum in September.

Later that month, MG Rover announced it was lifting a rule forcing parts and services suppliers to conduct business with the car giant in euros.

The CBI has, under the leadership of Digby Jones, wavered from its firmly pro-euro stance, and spread its campaigns to subjects such as transport.

The CBI conference on Monday hosts a debate entitled "Is the single market delivering?", with speakers including anti-euro businessman Sir Anthony Bamford, head of JCB.