Mae’r Ddeddf yn cefnogi dull gweithredu cydlynus ar draws y DU i ymateb i’r bygythiad i iechyd y cyhoedd a berir gan COVID-19, gan ddarparu pwerau cyson i ymateb i’r sefyllfa yng Nghymru, o fewn meysydd a gedwir yn ôl a meysydd datganoledig, a chan barchu’r setliad datganoli. Y bwriad yw cyrraedd sefyllfa lle y gall y bobl gywir (asiantaethau cyhoeddus ym mhob un o bedair gwlad y DU) weithredu’n gywir (fel y nodiryng Nghynllun Gweithredu’r DU ar COVID-19 ar GOV.UK) ar yr adeg gywir (o ganlyniad i benderfyniadau a wneir gan bedair llywodraeth y DU, fel arfer o dan nawdd COBR) – gan ddefnyddio’r un pwerau, ar yr un pryd, yn yr un ffordd.
The Act supports a cohesive UK approach in responding to the COVID-19 public health threat, providing coherent powers to respond to the outbreak in Wales, in both reserved and devolved areas, and respecting the devolution settlement. The intention is to get to a position whereby the right people (public agencies in all four nations of the UK) can take the right action (as set out in theUK COVID-19 Action Plan on GOV.UK) at the right time (as a result of decisions taken by the four UK governments, usually under the auspices of COBR) - using the same powers, at the same time, in the same way.