The participation of securities depositories in T2S is voluntary; it took almost two years of negotiations between the Eurosystem and the European CSD community to achieve a mutually satisfactory contract for the use of the platform’s settlement services.
The official date for the United Kingdom to leave the European Union is 29 March 2019. As of today, however, it is still unclear how this will happen – if it happens at all. The worst scenario would be a Brexit without any agreement between the United Kingdom and the EU on their future relationship.