Ers imi ddod yn ymwybodol o broblem yr olwynion ar yr 28ain o Chwefror, rwyf wedi derbyn y newyddion diweddaraf yn rheolaidd gan Drenau Arriva Cymru a Network Rail Cymru. Roeddwn yn ddiolchgar iddynt ac i'w staff sydd wedi gweithio'n ddi-flino mewn tywydd gwael eithriadol i sicrhau bod y gwasanaethau yn dychwelyd i'w hamserlen arferol cyn gynted â phoisbl, ac i roi'r newyddion diweddaraf i'r cyhoedd.
Since I first became aware of the wheel issue on 28 February I have been receiving frequent updates from Arriva Trains Wales and Network Rail Wales Route. I am grateful to them and to all their dedicated staff who have worked tirelessly in extreme weather conditions to restore services to normal as soon as possible and to keep the public up to date.