United Kingdom

In September 2010, the UK government announced that it had “not more than 225” Trident nuclear warheads and that this would be reduced to “not more than 180” by the mid 2020s.[i]The UK’s only delivery system is the Trident D5 missile. Development and construction of the warheads takes place at the Atomic Weapons Establishment (AWE) in Aldermaston, England.[ii]


Trident II (D5)

Aerojet Rocketdyne – solid and liquid propulsion systems

BAE Systems – common missile compartment

Boeing: component production and technical support services of the navigation system, test equipment and software modernization, and repair of the system, maintenance, repair, and rebuilding and technical services in support of the navigation subsystem

General Dynamics –guidance system lifecycle, engineering, development, and production activities

Honeywell International –producing integrated circuit components, Guidance System micro circuit wafers and Strategic Systems Programs alterations materials

Lockheed Martin –construction

Moog- launch vehicle and strategic missile controls

Northrop Grumman– Underwater Launcher System and Advanced Launcher Development Program

Orbital ATK– rocket propulsion systems


Atomic Weapons Establishment

responsible for warhead maintenance

AWE-ML is a joint venture responsible for the entire life cycle, from initial concept to assessment, design, component manufacture and assembly, in-service support and decommissioning and disposal

Jacobs Engineering

Lockheed Martin– lead company




[i] Volkery, Carsten, ‘Deterrent Lite’: A Look at Britain’s and France’s Nuclear Arsenals, Der Spiegel, http://www.spiegel.de/international/europe/deterrent-lite-a-look-at-britain-s-and-france-s-nuclear-arsenals-a-688504.html, viewed 24 July 2014.

[ii] Ainslie, Assuring Destruction Forever, 2014, http://www.reachingcriticalwill.org/images/documents/Publications/modernization/uk-2014.pdf