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Country

United Kingdom of Great Britain and Northern Ireland

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Annex 2 State*

Yes

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Signature Date

1996-09-23

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Ratification Date

1998-04-05

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Monitoring Facilties

Location Type Treaty Code Status
Halley, Antarctica Radionuclide with Noble Gas RN69 Planned
Ascension Infrasound IS50 Certified
BIOT/Chagos Archipelago Radionuclide with Noble Gas RN66 Certified
St. Helena Radionuclide RN67 Certified
Tristan da Cunha Radionuclide with Noble Gas RN68 Certified
BIOT/Chagos Archipelago Hydroacoustic HA08 Certified
Tristan da Cunha Hydroacoustic HA09 Certified
Ascension Hydroacoustic HA10 Certified
Bermuda Infrasound IS51 Certified
BIOT/Chagos Archipelago Infrasound IS52 Certified
Tristan da Cunha Infrasound IS49 Certified
Eskdalemuir Auxiliary Seismic AS104 Certified
AWE Aldermaston Radionuclide Laboratories RL15 Certified

Additional Information

Through five so-called EU Joint Actions adopted in the framework of the European Union's Common Foreign and Security Policy, the United Kingdom has made substantial voluntary contributions in support of the CTBTO's work in areas such as training, verification regime enhancement and technical assistance to third countries. Both the 2012 EU Joint Action and the preceding one in 2010 amounted to over 5 million euro.

Workshops and seminars hosted (selection):

  • Hosted On-Site Inspection Workshop-24 by the National Oceanography Centre (NOC), 12 to 16 November 2018 in Southampton.
  • Hosted Experts' Discussion on Civil and Scientific Applications of CTBT Verification Technologies, 9 to 10 May 2002 in London.

The United Kingdom ratified the CTBT jointly with France, as the 12th and 13th States to do so, see CTBTO press release.

Featured stations:

Facility Agreement entered into force 16 June 2004. See CTBTO press release on the signing of the agreement. 

EIF Activities

"Promoting Entry into Force of the CTBT is one of the United Kingdom's key disarmament and non-proliferation priorities. The UK strongly supports the continued development of the Treaty's global verification regime. We have provided experts to assist the CTBT Organisation with its efforts to establish a viable verification regime which is ready for entry in force."
Parliamentary Under Secretary of State Alistair Burt at the 2011 Article XIV Conference in New York.