Ar 20 Medi, fe gyhoeddodd yr Ysgrifennydd Gwladol dros Drafnidiaeth adolygiad o'r bôn i'r brig o reilffyrdd Prydain, a fyddai’n cael ei arwain gan Keith Williams, cyn-Brif Weithredwr British Airways, ac Is-Gadeirydd John Lewis a Phartneriaid erbyn hyn.  Bydd Keith Williams yn cael cymorth gan banel allanol ac mae Llywodraeth y DU yn bwriadu cyhoeddi Papur Gwyn ar argymhellion yr adolygiad cyn diwedd 2019.  Rwyf yn falch bod y panel allanol yn cynnwys Margaret Llewellyn, Cadeirydd Bwrdd Ymgynghori Network Rail ar gyfer Llwybr Cymru.
On 20 September 2018, the Secretary of State for Transport announced a root and branch review of Britain’s railways to be led by Keith Williams, former Chief Executive of British Airways and now Deputy Chair of John Lewis and Partners.  Keith Williams will be supported by an external panel and the UK Government intends to publish a White Paper on the review’s recommendations before the end of 2019.  I am pleased that the external panel includes Margaret Llewellyn, Chair of Network Rail’s Wales Route Supervisory Board.