Rwy'n ysgrifennu atoch gyda'r diweddaraf am fy nhrafodaethau â'r Ysgrifennydd Gwladol dros Drafnidiaeth am fater sy'n gysylltiedig â threfniadau ariannol gwasanaethau'r rheilffyrdd.
I am writing to update you following the completion of discussions with the Secretary of State for Transport on an issue outstanding relating to the rail services financial arrangements.