Cadeiriwyd y cyfarfod gan y Taoiseach Leo Varadkar TD ar ran Llywodraeth Iwerddon. Ymysg y rhai eraill a oedd yn bresennol oedd y Tánaiste Micheál Martin TD, Prif Weinidog yr Alban, y Gwir Anrhydeddus Humza Yousaf ASA, Prif Weinidog Jersey, y Dirprwy Kristina Moore, Prif Weinidog Ynys Manaw, yr Anrhydeddus Alfred Cannan MHK, yr Ysgrifennydd Gwladol dros Ffyniant Bro, Tai a Chymunedau a'r Gweinidog dros Gysylltiadau Rhynglywodraethol, y Gwir Anrhydeddus Michael Gove AS, ac Ysgrifennydd Gwladol Gogledd Iwerddon, y Gwir Anrhydeddus Chris Heaton-Harris AS.
The meeting was chaired by the Taoiseach Leo Varadkar TD on behalf of the Government of Ireland. Other attendees included Tánaiste Micheál Martin TD, the First Minister of Scotland the Rt Hon Humza Yousaf MSP, the Chief Minister of Jersey Deputy Kristina Moore, the Chief Minister of the Isle of Man Hon Alfred Cannan MHK, Secretary of State for Levelling Up, Housing and Communities, and Minister for Intergovernmental Relations the Rt Hon Michael Gove MP, and the Secretary of State for Northern Ireland the Rt Hon Chris Heaton-Harris MP.