Ken was appointed Cabinet Secretary for North Wales and Transport on 21 March 2024, and re-appointed as Cabinet Secretary for Transport and North Wales on 11 September 2024.
Penodwyd Ken yn Ysgrifennydd y Cabinet dros Ogledd Cymru a Thrafnidiaeth ar 21 Mawrth 2024, a’i ailbenodi’n Ysgrifennydd y Cabinet dros Drafnidiaeth a Gogledd Cymru ar 11 Medi 2024.