Unlike many reserved tribunals which were reformed by the Tribunals, Courts and Enforcement Act 2007, the devolved tribunals have each largely remained as they were constituted on their creation.
Ni chaniateir systemau cell fach Rheoliad 2020/1070 ar Adeiladau Rhestredig na Henebion Cofrestredig, fel yn achos systemau cell fach, oherwydd fe'u rheolir gan gyfundrefnau cydsynio gwahanol.