| International Organisations Act 1968 | 1968 c. 48 | s. 1 | saved | Merchant Shipping and Maritime Security Act 1997 | 1997 c. 28 | s. 27(2) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 1 | modified | International Organisations Act 2005 | 2005 c. 20 | s. 4(1) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 1 | modified | International Organisations Act 2005 | 2005 c. 20 | s. 8 | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 1(5) s. 1(6)(a) | modified | International Organisations Act 2005 | 2005 c. 20 | s. 4(2) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 1(7) | inserted | The Civil Partnership Act 2004 (International Immunities and Privileges, Companies and Adoption) Order 2005 | 2005 No. 3542 | art. 2(1) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 2(2)(b) | repealed in part | Vehicle Excise and Registration Act 1994 | 1994 c. 22 | s. 65 Sch. 5 Pt. 1 | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 2(5) | words substituted | The Civil Partnership Act 2004 (International Immunities and Privileges, Companies and Adoption) Order 2005 | 2005 No. 3542 | art. 2(2)(a) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 2(5) | words substituted | The Civil Partnership Act 2004 (International Immunities and Privileges, Companies and Adoption) Order 2005 | 2005 No. 3542 | art. 2(2)(b) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B | inserted | International Organisations Act 2005 | 2005 c. 20 | s. 5 | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B heading | substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(2) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(1) | substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(2) | words substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(4)(a) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(2)(a) | word substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(4)(b) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(2)(b) | word substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(4)(b) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(2)(b) | words substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(4)(c) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(3)(a) | words substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(5)(a) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(3)(b) | word substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(5)(b) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(3A) | inserted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(6) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(3A) | word substituted | The Retained EU Law (Revocation and Reform) Act 2023 (Consequential Amendment) Regulations 2023 | 2023 No. 1424 | Sch. para. 5 | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 4B(4) | words substituted | European Union (Future Relationship) Act 2020 | 2020 c. 29 | s. 27(7) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 5 | applied | International Organisations Act 2005 | 2005 c. 20 | s. 7 | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 6(3) | restricted | The G8 Gleneagles (Immunities and Privileges) Order 2005 | 2005 No. 1456 | art. 2(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | s. 6(3) | excluded | The G7 Presidency (Immunities and Privileges) Order 2021 | 2021 No. 521 | art. 3(4) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 para. 19(c) | amended | Value Added Tax Act 1994 | 1994 c. 23 | s. 100(1) Sch. 14 para. 4 | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The European Molecular Biology Laboratory (Immunities and Privileges) Order 1994 | 1994 No. 1890 | arts. 13(2)-(4) 14(2) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The World Trade Organisation (Immunities and Privileges) Order 1995 | 1995 No. 266 | arts. 13(3)arts. 13(4) 14(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 para. 16 | power to applied | Hong Kong Economic and Trade Office Act 1996 | 1996 c. 63 | s. 1(3) Sch. paras. 5(c) 7 8(2)(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 1 | power to applied | Northern Ireland Arms Decommissioning Act 1997 | 1997 c. 7 | s. 7(2)(b) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 1 | power to applied (temp.) | Northern Ireland (Location of Victims' Remains) Act 1999 | 1999 c. 7 | s. 2(1)(b)(6) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 2 III | power to applied (temp.) | Northern Ireland (Location of Victims' Remains) Act 1999 | 1999 c. 7 | s. 2(1)(c)(6) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 5 | power to applied (temp.) | Northern Ireland (Location of Victims' Remains) Act 1999 | 1999 c. 7 | s. 2(1)(c)(6) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Mobile Satellite Organisation (Immunities and Privileges) Order 1999 | 1999 No. 1125 | art. 15 | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Mobile Satellite Organisation (Immunities and Privileges) Order 1999 | 1999 No. 1125 | art. 16(2) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | | The Organisation for Joint Armament Cooperation (Immunities and Privileges) Order 2000 | 2000 No. 1105 | art. 14 | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | | The International Maritime Organisation (Immunities and Privileges) Order 2002 | 2002 No. 1826 | art. 14(3)-(5) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | | The International Maritime Organisation (Immunities and Privileges) Order 2002 | 2002 No. 1826 | art. 15(2)(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | | The International Maritime Organisation (Immunities and Privileges) Order 2002 | 2002 No. 1826 | art. 19(2) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (Immunities and Privileges) Order 2004 | 2004 No. 1282 | art. 14(2)-(4) 15(2) | Yes |   This amendment comes into force on the date on which the Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization on the conduct of activities, including post-certification activities, relating to International Monitoring Facilities for the Comprehensive Nuclear-Test-Ban Treaty, adopted at Vienna on 12th November 1996 [Cm. 4675] enters into force |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The G8 Gleneagles (Immunities and Privileges) Order 2005 | 2005 No. 1456 | art. 2(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | excluded | The European Organization for Nuclear Research (Privileges and Immunities) Order 2006 | 2006 No. 1922 | art. 12(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 1 para. 6(4)-(6) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 1 para. 7(4) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 3 para. 6(3)-(5) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 3 para. 7(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 4 para. 7(2)(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 4 para. 8(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 6 para. 6(4)(5) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 6 para. 7(3) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 7 para. 6(3)-(5) | Yes | |
| International Organisations Act 1968 | 1968 c. 48 | Sch. 1 Pt. 4 | restricted | The International Organisations (Immunities and Privileges) (Scotland) Order 2009 | 2009 No. 44 | Sch. 8 para. 6(3)-(5) | Yes | |