Os ydych wedi cael cenedligrwydd Prydeinig trwy frodori neu gofrestru dylech ddal tystysgrif sy’n cadarnhau manylion eich hawl i Ddinasyddiaeth Brydeinig. Os oes amheuon gennych, ffoniwch ein Llinell Gyngor ar Basportau 24 awr 0300 222 0000 (gweler telerau ac amodau).
Llinell Gyngor ar Basportau 24 awr: 0300 222 0000 (gweler telerau ac amodau). Calls made to 0300 numbers from landlines and mobile phones are charged to customers at their network provider's national rate. Live operators are available to assist with your enquiry 24 hours a day.