Planning to Hire Foreign Nationals in the U.K. in 2021? Apply for a Tier 2 Sponsor Licence When the UK government decided to leave European Union, (referred to as BREXIT), the prime minister Boris Johnson was aware of the fact that it will create a shortage of skilled workers in the UK. That is why the government later introduced a new "Employers Guide to Becoming a Licensed Sponsor of Skilled Migrant Workers". In Britain, you must be aware that erring to acknowledge immigration law functions and responsibilities can have severe repercussions for your enterprise.