The date for the referendum on whether Britain should remain in the European Union has been set. Companies within the telecoms sector, their boards and customers are all likely to be impacted if Britain was to exit – Brexit. Here we provide a short overview of the possible legal and regulatory implications for the telecoms sector that might result in the aftermath of Brexit. However, the big unknown is the nature of the trade relationship to be negotiated between the UK and the EU following Brexit. If the UK exits it will be important for industry players to determine the impacts specific to them.