Brexit becomes a reality and will affect all the member states. As the EU has never experienced leaving of one of its member states, there are several questions on which almost nobody has an answer with 100 % certainty. The political and economic impacts will certainly be quite noticeable, and expectations of all the actors, such as politicians, companies or citizens are enormous. Also, there is still an option that marriage between the EU and the UK could be over with hard Brexit or no-deal Brexit. Everybody hopes that this new phenomenon will not change our lives as radically as some experts predict.