Although the UK has already left the EU 9 months ago, EU legislation is still applicable to the country during the transitional period until the end of the year, so in practice we have not yet faced the post-Brexit legal environment. Due to the protracted process, businesses in the EU may easily overlook the fact that, as of January 2021, they will no longer be able to transfer personal data to the UK as they used to. However, until the end of the year, there is still time to settle the legality of data transfer to UK, the possibilities of which are analysed in our short article.