| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol) (Cymru) 2020 | 2020 No. 574 | reg. 12E(9) | inserted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 6 | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol) (Cymru) 2020 | 2020 No. 574 | reg. 12F | excluded | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 5 | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol) (Cymru) 2020 | 2020 No. 574 | Sch. 2 para. 8 | words omitted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 7 | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol) (Cymru) 2020 | 2020 No. 574 | Sch. 3 Pt. 1 | words omitted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 2 | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol) (Cymru) 2020 | 2020 No. 574 | Sch. 3A | words inserted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 4 | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 11A heading | substituted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(2) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 11AA | inserted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(3) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 11B(1) | words inserted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(4) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 12 | words substituted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(5) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 14(2)(aa) | words inserted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(6) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 22(4)(a) | words substituted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(7) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 30 | words substituted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(8) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 40(1)(a) | words inserted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(9)(a)(i) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 40(1)(b) | words substituted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(9)(a)(ii) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | reg. 40(2)(a) | words substituted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(9)(b) | Yes | |
| Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 | 2020 No. 1609 | Sch. 4 para. 48 | words substituted | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8(10) | Not yet made to Welsh language versionNot applicable to English language version |   Amendment to Welsh text only |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Not yet made to Welsh language versionApplied to English language version | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 2 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(3) | Not yet made to Welsh language versionApplied to English language version | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 2 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(3) | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 3 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(3) | Not yet made to Welsh language versionApplied to English language version | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 3 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(3) | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 4 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Not yet made to Welsh language versionApplied to English language version | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 4 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 5 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Not yet made to Welsh language versionApplied to English language version | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 5 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 6 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Not yet made to Welsh language versionApplied to English language version | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 6 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 7 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Not yet made to Welsh language versionApplied to English language version | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 7 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Yes | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Not yet made to Welsh language versionApplied to English language version | |
| Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 8 | coming into force | Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 2) (Cymru) 2021 | 2021 No. 46 | reg. 1(2) | Yes | |