The managing director of Siemens UK, which employs 13,000 people across the country, including in the South East, has warned that his company would stop investing in factories in the UK if it was not part of the EU.
He added that leaving the EU would be "disastrous" for British manufacturers. This follows a poll last month which found that eight out of ten manufacturers want to remain in the EU.
Local Lib Dem Euro-MP, Catherine Bearder, commented:
"The message from business is loud and clear, it's in Europe in work.
"Thousands of jobs in the South East every year are created by foreign investors, for whom a crucial factor is the ability to export freely to the world's largest single market.
"If we did what UKIP and many Tories want and pulled out of Europe all together, we would lose that position and put crucial jobs and investment at risk.
"Liberal Democrats are clear that next time there is a serious change to Europe's rules affecting the UK, we will have an In Out referendum.
"But when that time comes you can be sure that we will be campaigning as the Party of In, for EU membership and for the British jobs that depend on it."