Yn dilyn dyfarnu'r contract am wasanaeth rheilffyrdd Cymru a'r Gororau a Metro De Cymru i KeolisAmey y llynedd, cyhoeddodd Keolis UK y byddai'n symud ei bencadlys o Lundain i swyddfa newydd yng Nghymru erbyn 2019, ac y bydd yn symud ei is-adran reilffyrdd byd-eang o Baris i Gymru erbyn 2020.
Following award of the contract for the Wales and Borders rail service and South Wales Metro to KeolisAmey last year, Keolis UK announced it will move its headquarters from London to a new office in Wales by 2019, and will relocate its global rail division from Paris to Wales by 2020.