Every International Organization the UK Belongs To: The Complete List

The UK's diplomatic DNA is woven into the world's major multilateral bodies. Here's the categorized roster.

🌍 Core Political & Security

• United Nations (UN) — Permanent Security Council member (P5)
• NATO — Founding member (1949)
• G7 — Finance ministers/leaders summit
• G20 — Major economies forum
• Council of Europe — Human rights (ECHR), 46 members — *distinct from EU*
• Commonwealth of Nations — 56 members, King as Head
• OSCE — Security cooperation (57 states)

💰 Economic & Financial

• OECD — Policy coordination, standards
• IMF — Quota: 4.03% (4th largest)
• World Bank Group — IBRD, IDA, IFC, MIGA
• WTO — Trade rules, dispute settlement
• Bank for International Settlements (BIS) — Central bank hub
• Financial Stability Board (FSB) — Global financial regulation

🇪🇺 European (Post-Brexit)

• European Union — Left Jan 31, 2020. Now: Trade & Cooperation Agreement (TCA)
• European Economic Area (EEA) — Not a member
• European Free Trade Association (EFTA) — Not a member
• Council of Europe — Still a member (see above)

🎨 Cultural, Educational & Scientific

• UNESCO — Founding member
• British Council — UK's cultural relations agency (operates in 100+ countries)
• Commonwealth Scholarship & Fellowship Plan
• CERN — Particle physics (founding member)
• European Space Agency (ESA) — Founding member, 2nd largest contributor
• International Atomic Energy Agency (IAEA)

🌱 Environmental & Climate

• UNFCCC / Paris Agreement — Party
• IPCC — Government participation
• UNEP — Member
• Convention on Biological Diversity (CBD) — Party
• Ramsar Convention (Wetlands) — Party
• CITES — Wildlife trade

⚖️ Legal & Human Rights

• International Criminal Court (ICC) — State Party
• International Court of Justice (ICJ) — UN member
• Permanent Court of Arbitration
• HCCH (Hague Conference on Private International Law)

The UK joins 100+ IGOs. This list covers the majors shaping law, trade, security, science, and planet.