| Official Secrets Act 1911 | 1911 c. 28 | Act | repealed | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 1 | Yes | |
| Official Secrets Act 1920 | 1920 c. 75 | Act | repealed | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 2 | Yes | |
| Official Secrets Act 1939 | 1939 c. 121 | Act | repealed | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 3 | Yes | |
| Electoral Law Act (Northern Ireland) 1962 | 1962 Chapter 14 | s. 105(9) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 1(2) | Yes | |
| Electoral Law Act (Northern Ireland) 1962 | 1962 Chapter 14 | s. 106(1A) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 1(3) | Yes | |
| Electoral Law Act (Northern Ireland) 1962 | 1962 Chapter 14 | s. 108(5) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 1(4) | Yes | |
| Electoral Law Act (Northern Ireland) 1962 | 1962 Chapter 14 | s. 111(2B) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 1(5) | Yes | |
| Electoral Law Act (Northern Ireland) 1962 | 1962 Chapter 14 | s. 112(1H) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 1(6) | Yes | |
| Electoral Law Act (Northern Ireland) 1962 | 1962 Chapter 14 | s. 118(4) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 1(7) | Yes | |
| Criminal Appeal Act 1968 | 1968 c. 19 | s. 1 | applied | National Security Act 2023 | 2023 c. 32 | Sch. 9 para. 4(2)(c) | Yes | |
| Rehabilitation of Offenders Act 1974 | 1974 c. 53 | Act | excluded | National Security Act 2023 | 2023 c. 32 | Sch. 6 para. 21(2) | Yes | |
| Rehabilitation of Offenders Act 1974 | 1974 c. 53 | Act | excluded | National Security Act 2023 | 2023 c. 32 | Sch. 12 para. 10(2) | Yes | |
| Judicature (Northern Ireland) Act 1978 | 1978 c. 23 | s. 56(1)(2)(4) | excluded | National Security Act 2023 | 2023 c. 32 | Sch. 10 para. 7(8)(b) | Yes | |
| Rehabilitation of Offenders (Northern Ireland) Order 1978 | 1978 No. 1908 | Order | excluded | National Security Act 2023 | 2023 c. 32 | Sch. 6 para. 21(2) | Yes | |
| Rehabilitation of Offenders (Northern Ireland) Order 1978 | 1978 No. 1908 | Order | excluded | National Security Act 2023 | 2023 c. 32 | Sch. 12 para. 10(2) | Yes | |
| Magistrates' Courts Act 1980 | 1980 c. 43 | s. 108(1)(b) | applied | National Security Act 2023 | 2023 c. 32 | Sch. 9 para. 4(4)(d) | Yes | |
| Criminal Appeal (Northern Ireland) Act 1980 | 1980 c. 47 | s. 1 | applied | National Security Act 2023 | 2023 c. 32 | Sch. 9 para. 4(2)(c) | Yes | |
| The Magistrates' Courts (Northern Ireland) Order 1981 | 1981 No. 1675 | art. 140(1)(b) | applied | National Security Act 2023 | 2023 c. 32 | Sch. 9 para. 4(6)(d) | Yes | |
| Representation of the People Act 1983 | 1983 c. 2 | s. 65(5) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 2(2) | Yes | |
| Representation of the People Act 1983 | 1983 c. 2 | s. 168(1A) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 2(3) | Yes | |
| Representation of the People Act 1983 | 1983 c. 2 | s. 176(1A) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 1 para. 2(4) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 56(10) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 4(2) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 58(12) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 4(3) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 61(9)(b) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 4(4) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 63F(5)(a) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 4(5)(a) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 63F(5A)(a) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 4(5)(a) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 63F(11) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 4(5)(b) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 63U(4B) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 4(6) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 65(2A) | modified | National Security Act 2023 | 2023 c. 32 | Sch. 6 para. 14(2) | Yes | |
| Police and Criminal Evidence Act 1984 | 1984 c. 60 | s. 65A(2)(v) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 4(7) | Yes | |
| Official Secrets Act 1989 | 1989 c. 6 | s. 5(6) | words substituted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 6(2) | Yes | |
| Official Secrets Act 1989 | 1989 c. 6 | s. 11(3) | substituted for s. 11(3)(3A) | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 6(3)(a) | Yes | |
| Official Secrets Act 1989 | 1989 c. 6 | s. 11(4) | substituted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 6(3)(b) | Yes | |
| Official Secrets Act 1989 | 1989 c. 6 | s. 11(4A) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 6(3)(c) | Yes | |
| Official Secrets Act 1989 | 1989 c. 6 | s. 15(3) | power extended | National Security Act 2023 | 2023 c. 32 | s. 99(6) | Yes | |
| The Police and Criminal Evidence (Northern Ireland) Order 1989 | 1989 No. 1341 | art. 53A(2)(w) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 5(2) | Yes | |
| The Police and Criminal Evidence (Northern Ireland) Order 1989 | 1989 No. 1341 | art. 57(10) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 5(3) | Yes | |
| The Police and Criminal Evidence (Northern Ireland) Order 1989 | 1989 No. 1341 | art. 59(12) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 5(4) | Yes | |
| The Police and Criminal Evidence (Northern Ireland) Order 1989 | 1989 No. 1341 | art. 61(9)(b) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 5(5) | Yes | |
| The Police and Criminal Evidence (Northern Ireland) Order 1989 | 1989 No. 1341 | art. 62(12A) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 5(6) | Yes | |
| The Police and Criminal Evidence (Northern Ireland) Order 1989 | 1989 No. 1341 | art. 63(11) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 5(7) | Yes | |
| The Police and Criminal Evidence (Northern Ireland) Order 1989 | 1989 No. 1341 | art. 63R(4B) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 5(8) | See note |   This amendment not applied to legislation.gov.uk. The insertion of art. 63R by 2013 c. 7 (N.I.) Sch. 2 remains prospective at 31.12.2023. |
| The Police and Criminal Evidence (Northern Ireland) Order 1989 | 1989 No. 1341 | art. 64(8)(b) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 5(9) | Yes | |
| Criminal Procedure (Scotland) Act 1995 | 1995 c. 46 | Pt. 10 | applied | National Security Act 2023 | 2023 c. 32 | Sch. 9 para. 4(5)(e) | Yes | |
| Criminal Procedure (Scotland) Act 1995 | 1995 c. 46 | s. 18 | applied (with modifications) | National Security Act 2023 | 2023 c. 32 | Sch. 6 para. 18 | Yes | |
| Criminal Procedure (Scotland) Act 1995 | 1995 c. 46 | s. 19C(1)(a) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 7(2) | Yes | |
| Criminal Procedure (Scotland) Act 1995 | 1995 c. 46 | s. 19C(1)(b) | words inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 7(2) | Yes | |
| Criminal Procedure (Scotland) Act 1995 | 1995 c. 46 | s. 19C(2)(c) | word omitted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 7(3)(a) | Yes | |
| Criminal Procedure (Scotland) Act 1995 | 1995 c. 46 | s. 19C(2)(ca) | inserted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 7(3)(b) | Yes | |
| Criminal Procedure (Scotland) Act 1995 | 1995 c. 46 | s. 19C(6)(c) | word omitted | National Security Act 2023 | 2023 c. 32 | Sch. 18 para. 7(4)(a) | Yes | |