The Brexit vote of 2016 came as a powerful reminder that progress in economic integration can be reversed. And the raging debates in the UK parliament come as an equally powerful reminder that Brexit never was the easy choice its advocates suggested. To be or not to be is never an easy question, and even less so in an interconnected world.
Brexit is not only a regional affair. Once the UK has left its 27 European Union (EU) partners behind, that will alter the ability of non-EU countries to export to the UK. This is not a minor issue. In 2018, the UK was the fifth largest importer inside the EU, with almost $680 billion worth of goods, half which came from the EU, and it is an important trading partner for developing countries.
In full: https://www.weforum.org/agenda/2019/04/no-deal-brexit-developing-countries/