This Practice Note provides practical guidance on digital trade under the UK-EU Trade and Cooperation Agreement (UK-EU TCA). As such, it provides guidance on the scope of digital trade, customs duties, prior authorisation requirements, conclusion of contracts by electronic means, electronic authentication, transfer of and access to source code, online consumer trust, direct marketing communication, open government data, cooperation on regulatory issues in respect of digital trade and the understanding on computer services. Introduction Following on the UK’s decision to leave the internal market of the European Union (EU) (Brexit), the parties reached a free trade agreement in December 2020. The free trade agreement, the UK-EU TCA, is comprehensive and does not only cover trade in goods, but also trade in services, investment, competition and a host of other issues related to Brexit. One of the issues that the UK-EU TCA addresses is that of digital trade. In terms of the UK-EU TCA, the chapter on digital trade applies to all measures of either party that affects trade enabled by electronic