Industry organisation the EEF has called for a referendum on EU membership to take place at the earliest opportunity and no later than 2016 "to head off the creeping uncertainty which now exists for business and industry".
EEF said that since a referendum was now inevitable, it was not in the UK's long-term interest to wait until 2017: "It should take place in either May or Autumn of 2016."
EEF has also urged the Prime Minister to campaign positively for the UK to remain a leading member of the EU, emphasising the many benefits of continued membership alongside a pledge to work for reform with like-minded partners.
Terry Scuoler (pictured), chief executive of the EEF, said: "Now a referendum is going to take place, we need to get on with the negotiations and hold the referendum as soon as possible. Business and investors hate uncertainty and the longer this drags on the more damaging it will be.
"It is good to see the Prime Minister forging ahead with an early meeting of his counterparts across the EU to make Britain's case and Brussels is clearly signalling its willingness to engage. But, having put the recovery on a sound footing, we simply cannot afford to prevaricate on an issue of such importance for the future of our nation. Having trailed this since early 2013 the Government must surely have a clear idea of its proposed areas for negotiation and it must now be a priority to get on with it."
He added: "British manufacturers remain overwhelmingly of the view that our economic wellbeing is linked to the EU and we must stay in membership. It makes no sense to disengage from our major market where we would still face all the costs of compliance and enjoy none of the influence. We can achieve reform by being an active and leading member from within."
EEF research has revealed that 85% of UK manufacturers would vote to stay in the EU and just 7% would vote to pull out. This rises to 90% among manufacturers with over 250 employees, where not a single company would vote to come out.
EEF currently holds the Chair of CEEMET, the representative body for manufacturing in Europe. The organisation represents some 250,000 companies across Europe, employing some 30 million people.
