Should you wish to e-mail us about your case, please use the e-mail address for the area office in which your case is allocated, as shown in the list at the beginning of this document.
Os byddwch am anfon e-bost atom am eich achos, defnyddiwch gyfeiriad e-bost y swyddfa ardal y mae eich achos wedi'i ddyrannu iddi, sydd i'w weld yn y rhestr ar ddechrau'r ddogfen hon.