The EU Referendum is on the horizon. What impact might it have on UK SMEs?

The UK is set to have a referendum by the end of 2017 which will determine whether or not we will remain a member of the European Union. In this referendum everyone of voting age will take part, answering “Yes” or “No” to the question of whether they wish to remain a part of the EU. There’s no doubt that leaving the European Union would bring about quite a few changes in the UK, but how would this decision affect Small and Medium sized Enterprises?