By Heather Cameron

With just under a month to go until the UK goes to the polls for the EU referendum, we take a look at what some of the major think tanks have been publishing on the debate.

Immigration and the economy have featured heavily in the referendum campaign. Negative attitudes to immigration, and in particular free movement within the EU has been highlighted as the strongest predictor of opposition to UK membership of the EU. And the possibility of a negative impact on the economy in the event of a ‘leave’ vote has been widely highlighted by the ‘remain’ campaign. Obviously, many of the think tanks have a specific agenda or political leaning, and this is reflected in how they are responding to the Brexit question.

What the think tanks are saying

Civitas has published a number of reports on Britain’s EU membership and how an exit from it would not damage the economy the way some would have us believe. Its most recent report on the trade benefits of EU membership has branded the argument that the European Single Market provides huge trade benefits to the UK as a ‘myth’.

Highlighting the example of Switzerland, Civitas has also argued that Britain could have much to gain from leaving the EU in terms of trade as it would be free to organise its own deals without EU restrictions.

Nevertheless, it also implies that retaining free trade with the EU Single Market, similar to the circumstances of Switzerland and Norway, would be important.

Others that appear to back ‘Brexit’ (Britain’s exit from the EU) have also alluded to the potential importance of the Single Market for trade. According to the Adam Smith Institute (ASI), the only viable option for the UK following a vote to leave the EU is joining the European Economic Area (EEA). This involves participation in the Single Market but from a position outside the EU. It allows for the free movement of goods, capital, services and people with the rest of EU.

Research on the referendum by the National Institute of Economic and Social Research (NIESR) has also covered the economic impacts of a decision to leave, in addition to immigration and the financial sector.

Unlike Civitas, NIESR has warned of ‘a significant shock to the UK economy’ if there is a vote to leave the EU, assuming the UK will no longer have a free trade agreement. NIESR analysis suggests that the impact would include lower Gross Domestic Product (GDP), a depreciation of Sterling, reductions in trade and foreign direct investment (FDI), and a potential fall in consumption and real wages.

Similarly, the Centre for Economic Performance (CEP) has argued that Brexit would have a negative effect on FDI. It estimates that Brexit would lead to a 22% fall in FDI over the next decade, which could cause a 3.4% decline in real income – about £2,200 of GDP per household.

Also in its analysis, CEP argues that leaving the EU would lower trade between the UK and the EU because of higher tariff and non-tariff barriers to trade. It suggests that the UK would also benefit less from future market integration within the EU. And while it acknowledges the economic benefit of a lower net contribution to the EU budget in the event of a vote to leave, it also suggests that incomes would inevitably fall, offsetting any savings from reduced fiscal contributions to the EU budget: “we consistently find that by reducing trade, Brexit would lower UK living standards.”

In terms of immigration, recent NIESR research suggests that there has been relatively little impact on the UK so far but that a vote to leave the EU could dramatically change immigration and its impact. One article looking at the long term economic impact of a reduction in migration found that a significant reduction in net migration would have strong negative effects on the economy by reducing GDP and thereby impacting on public finances.

The Institute for Public Policy Studies (IPPR) has published a range of material on the immigration and free movement issue. Its most recent report highlights the importance of the issue of EU migration in relation to the upcoming vote. The study found that there are concerns around migrants’ access to welfare, pressure on public services, crime and personal security, and wage undercutting. But at the same time, the advantages of free movement were also noted, in particular opportunities for UK citizens to live and work easily in other EU countries and the benefits of EU migrants filling skills gaps.

Similarly, the Fabian Society has also highlighted the importance of the immigration issue, noting that more than half of voters select it as one of their top three concerns when thinking about the referendum. In testing the effectiveness of both arguments, it was found that while the ‘remain’ campaign is slightly ahead and does well on first impressions, the ‘leave’ arguments seem to have more power to persuade.

Final thoughts

Full Fact is attempting to independently check statements made by both sides of the campaign. But whatever the outcome, we are guaranteed that Europe will continue to be a talking point after 23 June.

If you enjoyed reading this, you may also like our previous posts on political participation and the role of social media and voter turnout.

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