Regulations 2020 and the Health Protection (Coronavirus, International Travel, Pre-Departure Testing and Operator Liability) (Wales) (Amendment) Regulations 2021.
2020 a Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol, Profion cyn Ymadael ac Atebolrwydd Gweithredwyr) (Cymru) (Diwygio) 2021.