The European aerospace and defence giant Airbus would reconsider investment in the UK in the event of Britain leaving the European Union.
Paul Kahn, president of the 16,000-employee Airbus UK, said Britain must compete for international investment.
“The best way to guarantee this is by remaining part of the EU,” he said.
Earlier, Chancellor George Osborne said in a speech to the CBI employers’ group that he wants the UK “to be in Europe, but not run by Europe”.
Prime Minister David Cameron has promised a referendum on the UK’s EU membership by the end of 2017, and the matter has been rising up the political and business agenda. BBC