Regulatory authorities, such as HM Revenue and Customs, Local Authorities, Health and Safety Executive and the Police.
Awdurdodau rheoleiddio, megis Cyllid a Thollau Ei Fawrhydi, yr Awdurdodau Lleol, yr Awdurdod Gweithredol Iechyd a Diogelwch a’r Heddlu.