Addressing Britain, and the world at large, Prime Minister Theresa May outlined a Brexit that will have the UK leave the Single Market, and adopt stricter immigration controls.

An Oxford study recently found that drastically decreasing immigration would raise the retirement age, meaning people will have to work longer before they are granted their pensions.

According to research conducted by the United Nations, there are 243 million international migrants – 3.4 per cent of the world population of the world.

Statista created a graph of its findings:

As of 2015, the United States leads as a migrant – hosting country with 46.6 million migrants, followed closely by Germany (12 million) and Russia (11.6 million).

India and Mexico send the most migrants, with 15.6 and 12.3 million nationals living in a different country.