Yna cafwyd trafodaeth ar Brexit, gan edrych yn gyntaf ar sefyllfa ddiweddaraf y negodiadau gyda'r Undeb Ewropeaidd ac yna ar y goblygiadau domestig sy'n cael eu mynegi ym Mil yr Undeb Ewropeaidd (Ymadael). O ran y cyntaf, tynnodd Prif Weinidog y DU sylw at ei haraith ddiweddar ym Mansion House ac at y Cyngor Ewropeaidd nesaf; lle mae Llywodraeth y DU yn gobeithio cytuno ar drefniadau pontio (neu 'weithredu') ar gyfer y cyfnod yn union ar ôl y diwrnod ymadael, a symud ymlaen ar y testun cyfreithiol sy'n rhoi effaith i gytundeb mis Rhagfyr diwethaf ar y trefniadau ymadael. Nododd y Prif Weinidog hefyd bod y Cyngor yn debygol o gytuno ar ganllawiau i'w negodwyr ar gyfer cam nesaf y negodiadau ar berthynas masnach a pherthynas diogelwch yn y dyfodol.
We then turned to a discussion on Brexit, looking both at the latest position on negotiations with the European Union and on the domestic implications as expressed in the EU (Withdrawal) Bill. On the first, the Prime Minister drew attention both to her recent Mansion House speech and to the forthcoming European Council; so far as the latter is concerned, the UK Government hopes to secure agreement to transition (or ‘implementation’) arrangements for the period immediately following exit day, and to make progress on the legal text giving effect to last December’s agreement on withdrawal arrangements. The Prime Minister also noted that the Council was likely to agree guidelines for its negotiators for the next phase of negotiations on future trade and security relationships.