Contents

SIPRI Yearbook 2023

Contents
Preface
Abbreviations and conventions
SIPRI Yearbook online
Introduction
1. Introduction: International stability and human security in 2022
- I. Food and geopolitics
- II. Great power relations
- III. Arms control and nuclear non-proliferation
- IV. Climate change and environmental diplomacy
- V. The course of the war in Ukraine
- VI. Unanswered questions
Part I. Armed conflict and conflict management, 2022
2. Trends in armed conflict
- Overview
- I. Global and regional trends and developments in armed conflicts
- II. International conflict management and peace processes
- III. Table of armed conflicts active in 2022
3. Multilateral peace operations
- Overview
- I. Global trends and developments in peace operations
- II. Organizations conducting multilateral peace operations
- III. The way forward for multilateral peace operations
- IV. Table of multilateral peace operations, 2022
4. Private military and security companies in armed conflict
- Overview
- I. The global growth of private military and security companies: Trends, actors and issues of concern
- II. Private military and security companies in sub-Saharan Africa
- III. The current regulatory landscape for private military and security companies
Part II. Military spending and armaments, 2022
5. Military expenditure and arms production
- Overview
- I. Global developments in military expenditure, 2022
- II. Regional developments in military expenditure, 2022
- III. Arms-producing and military services companies, 2021
6. International arms transfers
- Overview
- I. Global trends in arms transfers, 2018–22
- II. Developments among the suppliers of major arms, 2018–22
- III. Developments among the recipients of major arms, 2018–22
7. World nuclear forces
- Overview
- I. United States nuclear forces
- II. Russian nuclear forces
- III. British nuclear forces
- IV. French nuclear forces
- V. Chinese nuclear forces
- VI. Indian nuclear forces
- VII. Pakistani nuclear forces
- VIII. North Korean nuclear forces
- IX. Israeli nuclear forces
- X. Global stocks and production of fissile materials, 2022
Part III. Non-proliferation, arms control and disarmament, 2022
8. Nuclear disarmament, arms control and non-proliferation
- Overview
- I. Bilateral and multilateral nuclear arms control involving China, Russia and the United States
- II. The 10th review conference of the Non-Proliferation Treaty
- III. The first meeting of states parties to the Treaty on the Prohibition of Nuclear Weapons
- IV. The Joint Comprehensive Plan of Action on Iran’s nuclear programme
- V. Attacks on nuclear installations in Ukraine and the response missions of the International Atomic Energy Agency
9. Chemical, biological and health security threats
- Overview
- I. Health security
- II. Biological weapon allegations
- III. Biological weapon disarmament and non-proliferation
- IV. Allegations of and reactions to chemical weapon use
- V. Chemical weapon control and disarmament
10. Conventional arms control and regulation of new weapon technologies
- I. The Russia–Ukraine War and conventional arms control in Europe
- II. Multilateral regulation of inhumane weapons and other conventional weapons of humanitarian concern
- III. Intergovernmental efforts to address the challenges posed by autonomous weapon systems
- IV. International transparency in arms procurement and military expenditure as confidence-building measures
- V. The Hague Code of Conduct against Ballistic Missile Proliferation
11. Space and cyberspace
- I. The space–cyber nexus
- II. Space attacks and cyberattacks in Ukraine
- III. Developments in space governance and the impact of the war in Ukraine
- IV. Developments in governance of cyberspace and the impact of the war in Ukraine
12. Dual-use and arms trade controls
- Overview
- I. The Arms Trade Treaty
- II. Multilateral arms embargoes
- III. The role and impact of multilateral trade restrictions on Russia and Belarus
- IV. The multilateral export control regimes
- V. Developments in the European Union’s dual-use and arms trade controls
Annexes
Annex A. Arms control and disarmament agreements
- I. Universal treaties
- II. Regional treaties
- III. Bilateral treaties
Annex B. International security cooperation bodies
- I. Bodies with a global focus or membership
- II. Bodies with a regional focus or membership
- III. Strategic trade control regimes
Annex C. Chronology 2022
About the authors

Text size: A
A

SIPRI Yearbook 2023

III. British nuclear forces

Chapter:: 7. World nuclear forces
Source:: SIPRI Yearbook 2023
Author(s):: Hans M. Kristensen, Matt Korda

As of January 2023 the United Kingdom’s nuclear weapon stockpile consisted of approximately 225 warheads (see table 7.4)—an unchanged estimate from the previous year. SIPRI assesses that around 120 of these are operationally available for delivery by Trident II D5 submarine-launched ballistic missiles (SLBMs), with about 40 being carried on a nuclear-powered ballistic missile submarine (SSBN) that is on patrol at all times. The UK is expected to increase the number of warheads it possesses in the coming years.

Citation (MLA):: Kristensen, Hans M., and Matt Korda. "7. World nuclear forces." SIPRI Yearbook. SIPRI. Oxford: Oxford University Press. 2016. Web. 27 Mar. 2025. <https://www.sipriyearbook.org/view/9780198890720/sipri-9780198890720-chapter-007-div1-009.xml>.
Citation (APA):: Kristensen, H., & Korda, M. (2016). 7. World nuclear forces. In SIPRI, SIPRI Yearbook 2023: Armaments, Disarmament and International Security. Oxford: Oxford University Press. Retrieved 27 Mar. 2025, from https://www.sipriyearbook.org/view/9780198890720/sipri-9780198890720-chapter-007-div1-009.xml
Citation (Chicago):: Kristensen, Hans M., and Matt Korda. "7. World nuclear forces." In SIPRI Yearbook 2023: Armaments, Disarmament and International Security, SIPRI. (Oxford: Oxford University Press, 2016). Retrieved 27 Mar. 2025, from https://www.sipriyearbook.org/view/9780198890720/sipri-9780198890720-chapter-007-div1-009.xml

The SIPRI Yearbook online requires a subscription or purchase to access its full text (purchase of a print copy of the 2010-2016 yearbooks also provides access to some content). Unsubscribed users can however freely search the site and view the abstracts and keywords for each book and chapter.
Please log in to access full text content, or find out more about how to subscribe.
If you think you should have access to this service, please contact your librarian.