Yn dilyn ymadawiad y DU â'r UE, daeth y DU yn aelod ynddo'i hun o Gytundeb Sefydliad Masnach y Byd (WTO) ar Gaffael gan Lywodraethau (GPA). Ymrwymodd y DU hefyd i gytundeb â'r UE, a adwaenir fel y Cytundeb Masnach a Chydweithredu (TCA).
Following the UK’s exit from the EU, the UK became a member in its own right to the World Trade Organisation (WTO) Agreement on Government Procurement (GPA). The UK also entered into an agreement with the EU, known as the Trade and Cooperation Agreement (TCA).