The purpose of the law was initially used to prevent “buy national” products and promote free movements of goods and services, consequently encouraging the EU’s public procurement market to open up to the competition.
However, given the nature of Brexit the effect on procurement law might be different if we leave the EU with a deal. Although, the EU procurement directives have been made UK law by statutes and will continue to apply by default after the end of the transition period in December 2020. This gives the UK the freedom to alter the regulations and predicting the long term effect on public procurement proves to be tricky.