United Kingdom of Great Britain and Northern Ireland

1925 Geneva Protocol
Signature (Paris) 17 June 1925  
Deposit of instruments of ratification (Paris) 9 April 1930 *
Antarctic Treaty
Signature (Washington) 1 December 1959  
Deposit of instruments of ratification (Washington) 31 May 1960  
Anti-Personnel Mine Ban Convention
Signature (UN) 3 December 1997  
Deposit of instruments of ratification (UN) 31 July 1998 *
Arms Trade Treaty
Signature (UN) 3 June 2013  
Deposit of instruments of ratification (UN) 2 April 2014 *
Biological Weapons Convention
Signature (Moscow) 10 April 1972  
Signature (London) 10 April 1972  
Signature (Washington) 10 April 1972  
Deposit of instruments of ratification (London) 26 March 1975 *
Deposit of instruments of ratification (Moscow) 26 March 1975 *
Deposit of instruments of ratification (Washington) 26 March 1975 *
Chemical Weapons Convention
Signature (UN) 13 January 1993 *
Deposit of instruments of ratification (UN) 13 May 1996 *
Comprehensive Nuclear-Test-Ban Treaty
Signature (UN) 24 September 1996  
Deposit of instruments of ratification (UN) 6 April 1998  
Convention on Certain Conventional Weapons
Signature (UN) 10 April 1981 *
Deposit of instruments of ratification (UN) 13 February 1995 *
Deposit of instruments of acceptance to Amendment to the Convention on Certain Conventional Weapons (UN) 25 July 2002  
Consent to be bound to Protocol IV on Blinding Laser Weapons (UN) 11 February 1999 *
Consent to be bound to Protocol III to the Convention on Certain Conventional Weapons (UN) 13 February 1995  
Consent to be bound to Protocol I to the Convention on Certain Conventional Weapons (UN) 13 February 1995  
Consent to be bound to Protocol II to the Convention on Certain Conventional Weapons (UN) 13 February 1995  
Consent to be bound to Amended Protocol II on the Use of Mines, Booby-Traps and Other Devices (UN) 11 February 1999 *
Convention on Cluster Munitions
Signature (UN) 3 December 2008  
Deposit of instruments of ratification (UN) 4 May 2010 *
Convention on Environmental Modification Techniques (ENMOD)
Signature (UN) 18 May 1977  
Deposit of instruments of ratification (UN) 16 May 1978 *
International Convention for the Suppression of Acts of Nuclear Terrorism
Signature (UN) 14 September 2005  
Deposit of instruments of ratification (UN) 24 September 2009  
Outer Space Treaty
Signature (Moscow) 27 January 1967  
Signature (Washington) 27 January 1967  
Signature (London) 27 January 1967  
Deposit of instruments of ratification (London) 10 October 1967 *
Deposit of instruments of ratification (Washington) 10 October 1967 *
Deposit of instruments of ratification (Moscow) 10 October 1967 *
Partial Test Ban Treaty
Signature (Moscow) 5 August 1963  
Signature (London) 5 August 1963  
Signature (Washington) 5 August 1963  
Deposit of instruments of ratification (Moscow) 10 October 1963  
Deposit of instruments of ratification (Washington) 10 October 1963  
Deposit of instruments of ratification (London) 10 October 1963 *
Pelindaba Treaty
Signature to Protocol I to the Pelindaba Treaty (African Union) 11 April 1996 *
Signature to Protocol II to the Pelindaba Treaty (African Union) 11 April 1996 *
Deposit of instruments of ratification of Protocol II to the Pelindaba Treaty (African Union) 12 March 2001 *
Deposit of instruments of ratification of Protocol I to the Pelindaba Treaty (African Union) 12 March 2001 *
Sea-Bed Treaty
Signature (Washington) 11 February 1971  
Signature (Moscow) 11 February 1971  
Signature (London) 11 February 1971  
Deposit of instruments of ratification (Moscow) 18 May 1972 *
Deposit of instruments of ratification (London) 18 May 1972 *
Deposit of instruments of ratification (Washington) 18 May 1972 *
Treaty of Rarotonga
Signature to Protocol 1 to the Treaty of Rarotonga (PIFS) 25 March 1996  
Signature to Protocol 2 to the Treaty of Rarotonga (PIFS) 25 March 1996  
Signature to Protocol 3 to the Treaty of Rarotonga (PIFS) 25 March 1996  
Deposit of instruments of ratification of Protocol 1 to the Treaty of Rarotonga (PIFS) 19 September 1997 *
Deposit of instruments of ratification of Protocol 3 to the Treaty of Rarotonga (PIFS) 19 September 1997 *
Deposit of instruments of ratification of Protocol 2 to the Treaty of Rarotonga (PIFS) 19 September 1997 *
Treaty of Tlatelolco
Signature to Additional Protocol I to the Treaty of Tlatelolco (Mexico City) 20 December 1967 *
Signature to Additional Protocol II to the Treaty of Tlatelolco (Mexico City) 20 December 1967 *
Deposit of instruments of ratification of Additional Protocol I to the Treaty of Tlatelolco (Mexico City) 11 December 1969 *
Deposit of instruments of ratification of Additional Protocol II to the Treaty of Tlatelolco (Mexico City) 11 December 1969 *
Treaty on Conventional Armed Forces in Europe (CFE)
Signature to Agreement on Adaptation of the Treaty on Conventional Armed Forces in Europe (The Hague) 19 November 1999  
Signature (The Hague) 19 November 1990  
Deposit of instruments of ratification (The Hague) 19 November 1991 *
Treaty on Open Skies
Signature (Ottawa) 24 March 1992  
Signature (Budapest) 24 March 1992  
Deposit of instruments of ratification (Budapest) 8 December 1993 *
Deposit of instruments of ratification (Ottawa) 8 December 1993 *
Treaty on a Nuclear-Weapon-Free Zone in Central Asia (CANWFZ)
Signature to Protocol to the Treaty on a Nuclear-Weapon-Free Zone in Central Asia (CANWFZ) (Bishkek) 6 May 2014 *
Deposit of instruments of ratification of Protocol to the Treaty on a Nuclear-Weapon-Free Zone in Central Asia (CANWFZ) (Bishkek) 30 January 2015  
Treaty on the Non-Proliferation of Nuclear Weapons (NPT)
Signature (Washington) 1 July 1968  
Signature (Moscow) 1 July 1968  
Signature (London) 1 July 1968 *
Deposit of instruments of ratification (Moscow) 29 November 1968 *
Deposit of instruments of ratification (London) 27 November 1968 *
Deposit of instruments of ratification (Washington) 27 November 1968 *