Mae Debra yn aelod o Fwrdd y Sefydliad Alacrity, Awdurdod Porthladd Aberdaugleddau, Cymdeithas Adeiladu'r Principality a Co-op Insurance ac mae'n cadeirio'r Ganolfan Fyd-eang Rhagoriaeth Rheilffyrdd.
Debra sits on the Board of The Alacrity Foundation, Milford Haven Port Authority, Principality Building Society, Co-op Insurance and Chairs GCRE Ltd.