| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex | completion | Council Regulation (EC) No 1791/2006 | 2006 No. 1791 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex | amendment | Commission Regulation (EC) No 933/2008 | 2008 No. 933 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex | amendment | Commission Regulation (EU) No 506/2010 | 2010 No. 506 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex | completion | Council Regulation (EU) No 517/2013 | 2013 No. 517 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex Pt. A | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(15)(a)(i) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex Footnote 18 Table | words added | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(15)(d) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex 1 | amendment | Commission Regulation (EC) No 759/2009 | 2009 No. 759 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex Pt. A para. 2(a) | words inserted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(15)(a)(ii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex Pt. A para. 7(c) | words omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(15)(a)(iii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex Pt. C para. 2 | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(15)(b) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex Pt. D para. 1(f) | words omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(15)(c)(i) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex Pt. D para. 1(g) | words omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(15)(c)(ii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Annex SECTION C.3 Point B) | replacement | Commission Implementing Regulation (EU) No 45/2012 | 2012 No. 45 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 1(1) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(2)(i) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 1(2) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(2)(ii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 1(2) | words substituted | The Retained EU Law (Revocation and Reform) Act 2023 (Consequential Amendments) Regulations 2025 | 2025 No. 82 | Sch. 15 para. 69 | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 1(3) | inserted | Agriculture Act 2020 | 2020 c. 21 | s. 34(4) | Not yet | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2(d) | word omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(3)(a)(i) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2(d) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(3)(a)(ii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2(d) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(3)(a)(iii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2(e)(f) | substituted for Art. 2(e) | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(3)(b) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2(e)(iv) | omitted in earlier amending provision S.I. 2019/814, reg. 10(3)(b) | The Animals, Aquatic Animal Health, Invasive Alien Species, Plant Propagating Material and Seeds (Amendment) (EU Exit) Regulations 2020 | 2020 No. 1388 | reg. 33(3)(a) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2(g) | inserted | The Animals (Legislative Functions) (EU Exit) Regulations 2019 | 2019 No. 588 | reg. 5(2) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2a | inserted | The Animals (Legislative Functions) (EU Exit) Regulations 2019 | 2019 No. 588 | reg. 5(3) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2a(1)(d) | omitted in earlier amending provision S.I. 2019/588, reg. 5(3) | The Aquatic Animal Health and Alien Species in Aquaculture, Animals, and Marketing of Seed, Plant and Propagating Material (Legislative Functions and Miscellaneous Provisions) (Amendment) (EU Exit) Regulations 2020 | 2020 No. 1463 | reg. 6(4)(a)(i) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 2a(2)(c) | omitted in earlier amending provision S.I. 2019/588, reg. 5(3) | The Aquatic Animal Health and Alien Species in Aquaculture, Animals, and Marketing of Seed, Plant and Propagating Material (Legislative Functions and Miscellaneous Provisions) (Amendment) (EU Exit) Regulations 2020 | 2020 No. 1463 | reg. 6(4)(a)(ii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 3(2) | substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(4) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4 | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(a) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(1) | completion | Council Regulation (EC) No 1791/2006 | 2006 No. 1791 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(1) | completion | Council Regulation (EU) No 517/2013 | 2013 No. 517 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(1) | words omitted | The Animals (Legislative Functions) (EU Exit) Regulations 2019 | 2019 No. 588 | reg. 5(4) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(1) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(b) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(1) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(c)(i) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(1) | words omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(c)(ii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(2)(d) | omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(d) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(4) | completion | Council Regulation (EC) No 1791/2006 | 2006 No. 1791 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(4) | completion | Council Regulation (EU) No 517/2013 | 2013 No. 517 | Regulation | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(4) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(e)(i)(aa) | See note |   This amendment not applied to legislation.gov.uk. Reg. 10(5)(e)(i)(aa) substituted immediately before IP completion day by S.I. 2020/1388, regs. 1(2)(a), 33(3)(b) |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(4) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(e)(i)(bb) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(4) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(e)(ii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(4) | words omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(e)(iii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(4) | words substituted by S.I. 2019/814, reg. 10(5)(e)(i)(aa) (as substituted) | The Animals, Aquatic Animal Health, Invasive Alien Species, Plant Propagating Material and Seeds (Amendment) (EU Exit) Regulations 2020 | 2020 No. 1388 | reg. 33(3)(b) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(5) | word substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(f) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(8) | omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(g) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(9) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(h)(i) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 4(9) | words inserted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(5)(h)(ii) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 5(2) | words substituted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(6)(a) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 5(4) | words omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(6)(b) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 5(6) | omitted | The Livestock (Records, Identification and Movement) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 814 | reg. 10(6)(c) | Yes | |
| Council Regulation (EC) No 21/2004 | 2004 No. 21 | Art. 6(1) | completion | Council Regulation (EC) No 1791/2006 | 2006 No. 1791 | Regulation | Yes | |