On 29 March 2019, the United Kingdom (UK) will leave the European Union (EU). Consequently, the EU's Common Fisheries Policy (CFP), including the rules on fisheries access, will cease to apply to the UK. The article analyses the legal regime for post-Brexit exclusive economic zone (EEZ) fisheries access between the UK and the EU against the background of the current legal status quo under the CFP. The article then proceeds to an analysis of potential lex ferenda. In this respect, it first discusses the EEZ fisheries access arrangements for the Brexit transition period contained in the prospective withdrawal agreement of 2018. In a second step, the article undertakes to identify key issues faced by the UK and the EU in negotiating a future framework regulating their fisheries access relationship. Keywords