It is not only about goods. Would leaving the EU raise air fares? The UK leaving the EU could lead to an increase in fares. The impact could be reduced on what agreements the UK reached with the EU and other countries.

Such countries as  EU-members are part of the European Common Aviation Area (ECAA), which grants access to the EU single market for aviation in return for compliance with safety requirements and economic cooperation with the EU. This means that, after Brexit, UK should make a new agreement with each individual country, providing raise fares.

 

Next factor where economy will be hit if Britain leaves EU are overseas companies which are based in Great Britain. If Britain does not agree on a trade agreement that many foreign companies would not be profitable to stay in the UK. Thus they leave the market and great Britain will lose not only trade but also many British people will lose their jobs.

The fate of the Europeans who living in the UK and British people who have moved to other EU countries is in the centre of Brexit negotiations. 

 

Thus, the UK's exit from the EU will increase the price of goods. Perhaps the British will have to refuse from their favorite imported products from abroad, and instead of traveling to Paris they will have to choose some English city.

 

The major argument for Britain's leaving from the EU without any doubts is immigration. The immigration was the main factor in agitation to vote for Brexit. Britain will end the free movement of labour immediately after Brexit and introduce restrictions to deter all but highly-skilled EU workers under detailed proposals set out in a Home Office. Plans to restrict EU immigration by giving “preference in the job market to resident workers”.

Would leaving the EU reduce immigration to the UK? 

    Probably the borders will not close, while it is possible the UK will agree to maintain free movement of people in return for access to the EU’s single market (as in Norway and Liechtenstein)

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