You can request to ​access your information online​. You can also request access to your information by completing​​​​​​​ the relevant form and sending it by post to:
Gallwch ofyn am eich gwybodaeth ar-lein​​. Gallwch hefyd ofyn am eich gwybodaeth drwy gwblhau’r ffurflen berthnasol a’i hanfon drwy’r post i: