United Kingdom
[Europe]
230 defence and aerospace companies are headquartered in United Kingdom.
- Companies
- 230
- Categories
- 53
- Listed
- 25
- Prime contractors
- 7
Main categories
Companies (230)
- Aardvark Clear Mine UK company manufacturing flail systems for mine clearance and route clearance vehicles. Energetic Materials · Tier 2 Supplier Tier 2 Supplier
- Accuracy International Accuracy International is a sme based in United Kingdom specializing in ax series and l115a3. Established in 1978, headquartered in Portsmouth, United Kingdom. Small Arms & Light Weapons · SME SME
- Accuracy International Defense UK company providing precision sniper rifles. Small Arms & Light Weapons · SME SME
- AmSafe Bridport AmSafe Bridport manufactures restraint systems, cargo nets, and webbing for military applications. Soldier Modernization · Tier 1 Supplier Tier 1 Supplier
- Animal Dynamics British company developing bio-inspired drones and vehicles. Founded in 2015, headquartered in Oxford, specializes in skeeter nano-uav, stork cargo drone. UAVs & Drones · SME SME
- Argon Electronics CBRN United Kingdom-based company, founded in 1987. Specializes in simulators, cbrn training, detectors for defense and military applications. CBRN Protection · SME SME
- Armtrac Limited Armtrac Limited is a British company specializing in the design and manufacture of remote-controlled mine clearance and battlefield area clearance systems. The company's flail and tiller systems are used worldwide for humanitarian demining and military route clearance operations. Energetic Materials · Tier 2 Supplier Tier 2 Supplier
- Arville Textiles UK manufacturer of technical woven fabrics for defense applications including camouflage, ballistic protection, and NBC filtration. Body Armor & Protection · SME SME
- Aspire Defence Aspire Defence provides facilities management and accommodation services for UK military. Base Operations · Services Provider Services Provider
- Avon Aerospace Avon Aerospace provides hydraulic and pneumatic components for military aircraft. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Avon Protection AVON British-American manufacturer of respiratory protection systems and ballistic protection. CBRN Protection · Tier 1 Supplier Tier 1 Supplier
- Avon Protection Defense AVON United Kingdom-based subsidiary, subsidiary of Avon Technologies. Specializes in m50, fm50, respirators for defense and military applications. CBRN Protection · Tier 1 Supplier Tier 1 Supplier
- AWE British organization maintaining UK nuclear weapons. Founded in 1950, headquartered in Aldermaston, United Kingdom, specializes in nuclear warheads. Energetic Materials · Government Entity Government Entity
- Babcock Defense BAB United Kingdom-based subsidiary, subsidiary of Babcock International. Specializes in naval support, aviation, training for defense and military applications. MRO Services · Services Provider Services Provider
- Babcock International BAB British multinational aerospace, defence, and security company specialising in naval and nuclear support. Naval Shipbuilding · Prime Contractor Prime Contractor
- Babcock International Defence LSE:BAB Babcock provides defense support services, naval vessel maintenance, and complex engineering. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- Babcock Weapons Handling BAB.L UK company providing weapons handling and launch systems for naval vessels. Missiles · Tier 1 Supplier Tier 1 Supplier
- BAE Systems BA. British multinational defence, security, and aerospace company. One of the world's largest defence contractors. Surface Combatants · Prime Contractor Prime Contractor
- BAE Systems Air UK company providing military aircraft and systems. Fighter Aircraft · Tier 1 Supplier Tier 1 Supplier
- BAE Systems Applied Intelligence BAE Systems Applied Intelligence provides cybersecurity, financial crime, and communications intelligence. Cybersecurity · Tier 1 Supplier Tier 1 Supplier
- BAE Systems Artillery United Kingdom-based subsidiary, subsidiary of BAE Systems. Specializes in m777, m109, as90 for defense and military applications. Artillery Systems · Tier 1 Supplier Tier 1 Supplier
- BAE Systems Land UK United Kingdom-based subsidiary, subsidiary of BAE Systems. Specializes in challenger 3, as90, munitions for defense and military applications. Armored Vehicles · Tier 1 Supplier Tier 1 Supplier
- BAE Systems Maritime United Kingdom-based subsidiary, subsidiary of BAE Systems. Specializes in type 26, dreadnought, astute for defense and military applications. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- BAE Systems Naval Guns British company producing naval artillery and weapon systems. Founded in 1999, headquartered in Barrow, specializes in mk 45, 57mm. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- BAE Systems Submarines BAE Systems Submarines is a major prime contractor based in United Kingdom specializing in astute-class and dreadnought-class. Established in 1871, headquartered in Barrow-in-Furness, United Kingdom. Submarines · Prime Contractor Prime Contractor
- Blighter Surveillance Radar UK company providing ground surveillance radar. Radar Systems · SME SME
- Blighter Surveillance Systems British company producing ground surveillance and counter-drone radar. Founded in 2002, headquartered in Cambridge, specializes in a400 radar, counter-uas. Radar Systems · Tier 1 Supplier Tier 1 Supplier
- Blue Bear Systems British company developing swarming UAV technologies and autonomous systems. Founded in 2003, headquartered in Bedford, specializes in smash swarming system, ghost target uavs. UAVs & Drones · SME SME
- Bravo Defence International Global defence consultancy providing strategic advisory and program management services. Defence Consulting · Services Provider Services Provider
- Bruntons Propellers Bruntons Propellers is a private company based in United Kingdom specializing in propellers and shaft systems. Established in 1908, headquartered in Clacton-on-Sea. Naval Shipbuilding · SME SME
- Capita Defence United Kingdom-based subsidiary, subsidiary of Capita. Specializes in recruitment, it services, training for defense and military applications. Training & Simulation · Services Provider Services Provider
- Carrington Textiles Defence British manufacturer of protective and performance fabrics for military uniforms, supplying flame-resistant, camouflage, and IR-reflective textiles to NATO armed forces. Produces combat uniform fabrics, NBC protective materials, and high-performance workwear textiles for defense customers. Military Textiles · Tier 2 Supplier Tier 2 Supplier
- Castrol Aerospace United Kingdom-based subsidiary, subsidiary of BP. Specializes in brayco, aero oils, fluids for defense and military applications. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Castrol Defense UK company providing lubricants and fluids for military vehicles and aircraft. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Cella Energy Defense United Kingdom-based company. Specializes in hydrogen, storage, fuel for defense and military applications. · SME SME
- Chelton Defense UK company providing antennas and communications for military aircraft. Military Communications · Tier 1 Supplier Tier 1 Supplier
- Chelton Defense Communications UK company providing military antennas and communication systems. Military Communications · Tier 1 Supplier Tier 1 Supplier
- Chemring Countermeasures UK manufacturer of countermeasures including flares, chaff, and decoys for aircraft and naval vessels. Electronic Warfare · Tier 1 Supplier Tier 1 Supplier
- Chemring Energetics UK subsidiary of Chemring Group designing and manufacturing energetic materials including propellants, pyrotechnics, and explosive fills for military munitions and rocket motors. Supplies warhead fills and initiators to NATO armed forces. Energetic Materials · Tier 1 Supplier Tier 1 Supplier
- Chemring EOD UK defense company's EOD division providing bomb disposal equipment and countermeasures. Bombs & Ordnance · Tier 1 Supplier Tier 1 Supplier
- Chemring Group CHG British munitions and countermeasures manufacturer. Founded in 1905, headquartered in Romsey, United Kingdom. Guided Munitions · Tier 1 Supplier Tier 1 Supplier
- Chess Dynamics British company producing stabilized surveillance and weapon systems. Founded in 1993, headquartered in Horsham, specializes in surveillance systems, remote weapons. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Claxton Engineering Claxton provides offshore engineering, decommissioning, and marine services for naval operations. Submarines · SME SME
- Cobham Advanced Electronic Solutions British-American microelectronics company providing RF and microwave components, antenna systems, and space-qualified electronics for defense and intelligence applications. Avionics & Flight Systems · Tier 1 Supplier Tier 1 Supplier
- Cobham Advanced EW United Kingdom-based subsidiary, subsidiary of Cobham. Specializes in jammers, ew pods, decoys for defense and military applications. Electronic Warfare · Tier 1 Supplier Tier 1 Supplier
- Cobham Antenna Systems UK company providing advanced antenna systems for military aircraft and platforms. Military Communications · Tier 1 Supplier Tier 1 Supplier
- Cobham EOD UK company providing electronic countermeasures and jammers for IED defeat. Electronic Warfare · Tier 1 Supplier Tier 1 Supplier
- Cobham Mission Equipment Seats UK company providing ejection seat components. Soldier Modernization · Tier 1 Supplier Tier 1 Supplier
- Cobham Mission Systems British company providing aerial refuelling and mission systems. Founded in 1934, headquartered in Wimborne, United Kingdom, specializes in hose-drogue systems, pod systems. Avionics & Flight Systems · Tier 1 Supplier Tier 1 Supplier
- Cobham Mission Systems Oxygen UK company providing military oxygen and refueling systems. Aircraft Engines · Tier 1 Supplier Tier 1 Supplier
- Cohort plc LON:CHRT British defence technology company with multiple subsidiaries. Founded in 2006, headquartered in Reading, specializes in electronic warfare, training systems. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- CRFS United Kingdom-based company, founded in 2007. Specializes in rfeye, spectrum, geolocation for defense and military applications. Signals Intelligence · SME SME
- Crysalis Technologies Crysalis provides high-speed imagery, data acquisition, and test instrumentation for defense. Advanced Sensors · SME SME
- D-RisQ United Kingdom-based company, founded in 2015. Specializes in kapture, ai assurance, safety for defense and military applications. Cybersecurity · SME SME
- David Brown Santasalo Naval David Brown Santasalo Naval is a subsidiary based in United Kingdom specializing in naval gearboxes and propulsion systems. Established in 1860, headquartered in Huddersfield. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- Defence Science and Technology Laboratory Defence Science and Technology Laboratory is a government agency based in United Kingdom specializing in defence r&d and cbrn. Established in 2001, headquartered in Porton Down, United Kingdom. Cybersecurity · Government Entity Government Entity
- DefenCell UK company providing geotextile defensive barriers. Base Operations · Services Provider Services Provider
- DefenCell Defense UK company providing modular defensive structures. Base Operations · Services Provider Services Provider
- DIANA DIANA (Defence Innovation Accelerator for the North Atlantic) is NATO's innovation accelerator program that connects Allied defense organizations with startups and researchers developing dual-use technologies. It operates a network of test centres and accelerator sites across Allied nations. Composites & Advanced Materials · Government Entity Government Entity
- Digital Barriers UK technology company providing covert surveillance, edge-AI video analytics, and smart border security systems for military, law enforcement, and government agencies. Digital Barriers' TVI Edge platform deploys AI-enabled cameras on military platforms and perimeter sensors for persistent wide-area surveillance. Surveillance & Reconnaissance · Tier 1 Supplier Tier 1 Supplier
- Divex UK company providing military diving equipment. Personal Equipment · Tier 2 Supplier Tier 2 Supplier
- Divex Defense UK diving equipment company providing military diving systems, helmets, and life support. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- Domo Tactical Communications UK wireless communications company providing tactical video, data, and mesh networking for defense and public safety. Military Communications · SME SME
- Dowty Propellers Defense UK company providing military aircraft propellers. Avionics & Flight Systems · Tier 1 Supplier Tier 1 Supplier
- Dragonfire Systems Welsh developer of directed energy weapon systems for air and missile defence applications. Directed Energy Weapons · Defence Tech Startup Defence Tech Startup
- Dreadnought Naval Industries British shipbuilder specializing in naval auxiliary vessels and support ships. Founded in 1998, headquartered in Newcastle, specializes in fleet auxiliaries, tankers. Naval Shipbuilding · SME SME
- Drone Defence UK counter-UAS specialist providing detection and defeat solutions for critical national infrastructure and military sites. Offers integrated layered C-UAS systems combining radar, RF sensors, and effectors. Counter-Drone Systems · SME SME
- DST Defence UK-based manufacturer of armored vehicle track systems, rubber track pads, and bridging components for military vehicles, headquartered in Ashford. Armored Vehicles · SME SME
- Dunlop Aircraft Tyres United Kingdom-based company, founded in 1910. Specializes in aircraft tires, tubes, retreads for defense and military applications. Avionics & Flight Systems · SME SME
- Element Defense Testing UK company providing testing and certification for defense systems. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Exclusive Analysis Defense Exclusive Analysis provides intelligence, risk analysis, and threat assessment for defense. Intelligence Systems · SME SME
- Faststream Recruitment Defense Faststream provides recruitment and staffing services for maritime and defense industries. Naval Shipbuilding · SME SME
- Finastra Defense Banking Finastra provides financial software and banking solutions for defense credit unions. Cybersecurity · Defence Tech Startup Defence Tech Startup
- First Light Fusion Defense First Light develops inertial confinement fusion technology for future energy and defense. Directed Energy Weapons · SME SME
- Firth Rixson Defense United Kingdom-based subsidiary, subsidiary of Howmet Aerospace. Specializes in rings, forgings, aerospace for defense and military applications. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- G&H Defense Lasers GHH.L UK company providing laser components and systems for defense. Night Vision & Optics · Tier 1 Supplier Tier 1 Supplier
- GDUK General Dynamics UK producing armored vehicles and IT systems. Founded in 1999, headquartered in Oakdale, United Kingdom, specializes in ajax, bowman. Armored Vehicles · Prime Contractor Prime Contractor
- Geollect UK geospatial intelligence company providing maritime tracking and analysis for defense and security. Intelligence Systems · Defence Tech Startup Defence Tech Startup
- GKN Aerospace British multinational tier-1 aerospace supplier producing aerostructures and engine components. Composites & Advanced Materials · Tier 1 Supplier Tier 1 Supplier
- GKN Aerospace Defense UK company providing aerostructures, engine systems, and advanced composites. Composites & Advanced Materials · Tier 1 Supplier Tier 1 Supplier
- GKN Aerospace Fuel Systems UK company providing military fuel systems and tanks. Jet Engines · Tier 1 Supplier Tier 1 Supplier
- GKN Aerospace UK British aerospace structures manufacturer for wings and nacelles. Founded in 1759, headquartered in Bristol, United Kingdom. Composites & Advanced Materials · Tier 1 Supplier Tier 1 Supplier
- Gravitricity United Kingdom-based company, founded in 2011. Specializes in gravity storage, energy, grid for defense and military applications. Jet Engines · SME SME
- Hadean British company providing distributed computing for military simulations. Founded in 2015, headquartered in London, United Kingdom, specializes in hadean platform, synthetic environments. Training & Simulation · Defence Tech Startup Defence Tech Startup
- Harrier Aerospace Services Provider of aircraft leasing and contract air services for military customers. Founded in 2005, headquartered in Farnborough. Logistics & Supply Chain · Services Provider Services Provider
- HESCO United Kingdom-based subsidiary, subsidiary of HESCO Group. Specializes in hesco barriers, bastion, concertainer for defense and military applications. Base Operations · Services Provider Services Provider
- HESCO Defense UK company providing protective barriers for military bases. Base Operations · Services Provider Services Provider
- Horiba MIRA Defense UK company providing autonomous vehicle tech. Autonomous Systems · Tier 1 Supplier Tier 1 Supplier
- Horstman Defence UK company providing suspension systems for armored fighting vehicles. Body Armor & Protection · SME SME
- Improbable British company providing synthetic environment technology for defense. Founded in 2012, headquartered in London, United Kingdom, specializes in spatialos, synthetic environments. Training & Simulation · Defence Tech Startup Defence Tech Startup
- Improbable Defence British technology company providing synthetic environments and simulation for military training. Training & Simulation · SME SME
- Improbable Defense United Kingdom-based subsidiary, subsidiary of Improbable, founded in 2012. Specializes in spatialos, simulation, wargaming for defense and military applications. Training & Simulation · Tier 1 Supplier Tier 1 Supplier
- Inmarsat Inmarsat is a tier 1 supplier based in United Kingdom specializing in maritime and aviation satcom. Established in 1979, headquartered in London, United Kingdom. Military Satellites · Tier 1 Supplier Tier 1 Supplier
- Inmarsat Government British company providing global mobile satellite communications for defence. Founded in 1979, headquartered in London, specializes in l-band services, ka-band. Military Communications · Tier 1 Supplier Tier 1 Supplier
- Intelligent Energy Defense United Kingdom-based subsidiary, subsidiary of Intelligent Energy. Specializes in ie-soar, fuel cells, uav power for defense and military applications. UAVs & Drones · Tier 1 Supplier Tier 1 Supplier
- Intertek Defense ITRK.L UK testing company providing quality assurance, testing, and certification for defense products. MRO Services · Services Provider Services Provider
- Ironclad Maritime Naval defence contractor building patrol vessels and maritime security systems. Founded in 2003, headquartered in Portsmouth, specializes in patrol boats, maritime surveillance systems. Naval Shipbuilding · SME SME
- Isotropic Systems UK satellite communications company developing multi-link terminals for defense and commercial SATCOM. Satellite Communications · SME SME
- Ivory Tower Defence Academic spin-off developing AI-based defence technologies. Founded in 2018, headquartered in Cambridge, specializes in ai algorithms, research systems. Artificial Intelligence · Defence Tech Startup Defence Tech Startup
- Jankel UK company providing armored vehicles, tactical systems, and protection solutions. Armored Vehicles · SME SME
- Jankel Military Systems UK company providing tactical vehicles and protection. Armored Vehicles · SME SME
- JFD Defence UK company providing submarine rescue systems, diving equipment, and hyperbaric systems. Submarines · Tier 1 Supplier Tier 1 Supplier
- Laird Performance Materials Defense UK company providing EMI shielding and thermal materials for defense. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Leonardo DIRCM United Kingdom-based subsidiary, subsidiary of Leonardo. Specializes in miysis, dircm, countermeasures for defense and military applications. Electronic Warfare · Tier 1 Supplier Tier 1 Supplier
- Leonardo Radar Warning Italian company providing radar warning receivers and electronic support measures. Electronic Warfare · Tier 1 Supplier Tier 1 Supplier
- Leonardo Targeting Systems United Kingdom-based subsidiary, subsidiary of Leonardo. Specializes in damocles, djrp, targeting for defense and military applications. Radar Systems · Tier 1 Supplier Tier 1 Supplier
- Malloy Aeronautics British company producing heavy-lift quadcopter drones. Founded in 2013, headquartered in Maidenhead, specializes in t-150, heavy lift cargo drones. UAVs & Drones · SME SME
- Marine Robotics UK unmanned maritime company providing autonomous surface vessels for survey, security, and defense applications. Naval Shipbuilding · Defence Tech Startup Defence Tech Startup
- Marshall Aerospace British aerospace company providing aircraft MRO and modifications. Founded in 1909, headquartered in Cambridge, United Kingdom, specializes in c-130 modifications, special missions. Aircraft MRO · Tier 1 Supplier Tier 1 Supplier
- Marshall Aerospace and Defence Group UK aerospace company providing aircraft modification, maintenance, and special mission conversions for military operators worldwide. MRO Services · Services Provider Services Provider
- Marshall Aerospace Medical United Kingdom-based subsidiary, subsidiary of Marshall Aerospace. Specializes in medevac, aircraft medical, patient transport for defense and military applications. Aircraft MRO · Tier 1 Supplier Tier 1 Supplier
- Martin-Baker British company producing ejection seats for military aircraft worldwide. Founded in 1934, headquartered in Denham, United Kingdom, specializes in mk16 ejection seat, mk18. Soldier Modernization · Tier 1 Supplier Tier 1 Supplier
- Martin-Baker Defense UK company providing military ejection seats. Soldier Modernization · SME SME
- Martin-Baker Rescue UK company providing ejection seats and crew escape systems. Electronic Warfare · SME SME
- MASS Consultants British company providing electronic warfare and training systems. Founded in 1983, headquartered in Lincoln, specializes in ew training, threat simulation. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- MBDA Brimstone UK company providing Brimstone air-launched ATGM. Missiles · Tier 1 Supplier Tier 1 Supplier
- MBDA Meteor European company providing Meteor air-to-air missile. Missiles · Tier 1 Supplier Tier 1 Supplier
- MBDA Seekers United Kingdom-based subsidiary, subsidiary of MBDA. Specializes in seekers, brimstone, meteor for defense and military applications. Missiles · Tier 1 Supplier Tier 1 Supplier
- MBDA UK MBDA UK is a major prime contractor based in United Kingdom specializing in storm shadow and brimstone. Established in 2001, headquartered in Stevenage, United Kingdom. Missiles · Prime Contractor Prime Contractor
- Meggitt British aerospace components manufacturer now owned by Parker Hannifin, specialising in braking and thermal systems. Avionics & Flight Systems · Tier 1 Supplier Tier 1 Supplier
- Meggitt Defence British company providing training systems and sensing equipment. Founded in 1947, headquartered in Christchurch, United Kingdom, specializes in target systems, sensors. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Meggitt Defense UK aerospace company providing sensing, thermal, and polymers for military aircraft and missiles. Composites & Advanced Materials · Tier 1 Supplier Tier 1 Supplier
- Meggitt Defense Systems Ammunition UK company providing ammunition handling systems. Ammunition · Tier 1 Supplier Tier 1 Supplier
- Meggitt Fire Protection United Kingdom-based subsidiary, subsidiary of Parker Hannifin. Specializes in fire suppression, detection, smoke for defense and military applications. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Meggitt Fuel Systems UK company providing fuel systems, valves, and sensors for military aircraft. Jet Engines · Tier 1 Supplier Tier 1 Supplier
- Meggitt Fuel Systems Defense UK company providing military fuel measurement and management. Jet Engines · Tier 1 Supplier Tier 1 Supplier
- Meggitt Polymers British company producing seals and thermal protection. Founded in 1947, headquartered in Coventry, United Kingdom. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Meggitt Safety Systems UK company providing aerospace fire protection. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Meggitt Sensing Defense UK subsidiary of Parker Hannifin (formerly Meggitt) providing precision sensors, structural health monitoring systems, and vibration sensing equipment for aerospace and defense platforms. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Meggitt Sensing Systems British company producing sensors for extreme environments. Founded in 1947, headquartered in Christchurch, specializes in vibration sensors, temperature sensors. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Meggitt Thermal Defense UK company providing thermal management and cooling for military electronics. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Meggitt Training Systems British company producing live-fire target systems and ranges. Founded in 1847, headquartered in Simi Valley, CA. Training & Simulation · Services Provider Services Provider
- Morgan Advanced Materials LSE:MGAM Morgan Advanced Materials produces ceramic armor, thermal management materials, and engineered components for defense applications. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Morgan Advanced Materials Defence British company producing ceramic armor and ballistic protection. Founded in 1856, headquartered in Stourport. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Morgan Advanced Materials Defense MGAM.L UK company providing advanced ceramics for defense armor and components. Armor Materials · Tier 1 Supplier Tier 1 Supplier
- Nobel Explosives Scottish-based manufacturer of commercial and military explosives, producing detonators, boosters, and explosive compounds at the historic Ardeer site. Part of the Chemring Group, supplies military-grade explosive fills and detonation systems for ordnance and demolition applications. Energetic Materials · Tier 2 Supplier Tier 2 Supplier
- NP Aerospace UK-based specialist in composite armor and vehicle protection systems for military applications. Provides ballistic protection, vehicle upgrade programs, and through-life support for armored fleets. Body Armor & Protection · SME SME
- Ocean Infinity UK company operating autonomous underwater and surface vessels for seabed mapping and defense applications. Autonomous Systems · Defence Tech Startup Defence Tech Startup
- Ocean Infinity Defense UK company providing autonomous underwater operations. Autonomous Systems · Tier 1 Supplier Tier 1 Supplier
- OneWeb OneWeb is a sme based in United Kingdom specializing in leo broadband satellites. Established in 2012, headquartered in London, United Kingdom. Military Satellites · SME SME
- OPEC CBRNe UK company providing CBRN training and detection. CBRN Protection · SME SME
- Open Cosmos UK company providing end-to-end small satellite missions from design through launch and operations. Open Cosmos builds and operates CubeSat and microsatellite platforms for defence, intelligence, and scientific payloads, offering rapid mission timelines of under 12 months. Military Satellites · Defence Tech Startup Defence Tech Startup
- OpenWorks Engineering British company producing net-capture counter-drone systems. Founded in 2012, headquartered in Northumberland, specializes in skywall, net launchers. UAVs & Drones · SME SME
- Oxis Energy UK lithium-sulfur battery company developing ultra-light batteries for defense aviation and unmanned systems. Jet Engines · SME SME
- Oxley Defense UK company providing LED lighting and EMI filters for military vehicles. Advanced Sensors · SME SME
- Oxley Developments United Kingdom-based company, founded in 1946. Specializes in led lighting, emi filters, nvg for defense and military applications. Advanced Sensors · SME SME
- Pearson Engineering UK company providing mine clearance, obstacle breaching, and military engineering equipment. Energetic Materials · Tier 2 Supplier Tier 2 Supplier
- Pearson Engineering Counter-IED UK company providing counter-IED equipment and route clearance. Energetic Materials · Tier 2 Supplier Tier 2 Supplier
- Penman Engineering UK-based defense manufacturer specializing in military shelters, container systems, and deployable infrastructure for NATO armed forces. Produces expandable shelters, field hospitals, and mobile command posts. Logistics & Supply Chain · SME SME
- Pennant International PEN.L UK company providing training solutions, simulation, and integrated support for defense. Training & Simulation · Services Provider Services Provider
- Ploughshare Innovations British company commercializing Dstl technologies. Founded in 2005, headquartered in Salisbury, specializes in technology transfer, licensing. Defence Consulting · Government Entity Government Entity
- Post-Quantum Defense United Kingdom-based company, founded in 2009. Specializes in pqc, vpn, identity for defense and military applications. Quantum Technologies · SME SME
- Powervamp United Kingdom-based company, founded in 1997. Specializes in gpu, frequency converters, power for defense and military applications. Jet Engines · SME SME
- PQShield Defense United Kingdom-based company, founded in 2018. Specializes in pqc hardware, software, ip for defense and military applications. Cybersecurity · Defence Tech Startup Defence Tech Startup
- Prometheus Medical Defense UK company providing military medical equipment and trauma care. Soldier Modernization · SME SME
- Proparms UK company providing breaching and demolition tools. Personal Equipment · SME SME
- Qinetiq QQ UK defense technology company providing R&D and testing services. Founded in 2001, headquartered in Farnborough, United Kingdom, specializes in test ranges, robotics. Autonomous Systems · Tier 1 Supplier Tier 1 Supplier
- QinetiQ Flight Sciences United Kingdom-based subsidiary, subsidiary of QinetiQ. Specializes in flight test, evaluation, training for defense and military applications. Training & Simulation · Services Provider Services Provider
- QinetiQ Quantum British company developing quantum technologies for defence applications. Founded in 2018, headquartered in Farnborough, specializes in quantum sensors, navigation. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- QinetiQ Target Systems UK company providing aerial targets for weapons testing. UAVs & Drones · Tier 1 Supplier Tier 1 Supplier
- QinetiQ Test Services QQ.L UK company providing weapons and systems testing for defense. Missiles · Tier 1 Supplier Tier 1 Supplier
- QinetiQ Vehicle Protection UK company providing survivability and protection systems. Body Armor & Protection · Tier 1 Supplier Tier 1 Supplier
- RBSL - Rheinmetall BAE Systems Land UK joint venture between Rheinmetall and BAE Systems established to deliver the Challenger 3 Life Extension Programme for the British Army. RBSL modernises Challenger 2 main battle tanks with a new 120mm smoothbore gun, digital fire control, and improved protection under a £800M+ contract. Main Battle Tanks · Prime Contractor Prime Contractor
- Rebellion Defence Rebellion Defence is a UK-US defense AI company providing artificial intelligence solutions to defense and intelligence agencies. Develops AI-powered products for threat detection, intelligence analysis, and autonomous systems. Key supplier to UK MOD and Five Eyes partners. Artificial Intelligence · Defence Tech Startup Defence Tech Startup
- Ricardo Defence British company providing powertrain and vehicle engineering for defence. Founded in 1915, headquartered in Shoreham, specializes in transmissions, powertrain. Armored Vehicles · Tier 1 Supplier Tier 1 Supplier
- Riverlane Riverlane is a Cambridge-based quantum computing company focused on quantum error correction, a critical enabler for fault-tolerant quantum systems with defense and intelligence applications. The company's Deltaflow platform provides a hardware-agnostic operating system for quantum computers used in national security research. Quantum Technologies · Defence Tech Startup Defence Tech Startup
- Roke Manor Research British company providing electronic warfare and sensing solutions. Founded in 1956, headquartered in Romsey, specializes in sigint, cyber. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Rolls-Royce Defence RR. British multinational aerospace and defence company, world leader in military jet engines and naval propulsion. Jet Engines · Prime Contractor Prime Contractor
- Rolls-Royce Naval UK division providing nuclear propulsion systems for submarines and power systems for naval vessels. Rocket Propulsion · Tier 1 Supplier Tier 1 Supplier
- Rolls-Royce Naval Marine British company producing naval propulsion systems. Founded in 1906, headquartered in Derby, specializes in mt30, nuclear propulsion. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- Rolls-Royce Submarines British division designing and manufacturing nuclear submarine reactors. Founded in 1959, headquartered in Derby, United Kingdom, specializes in pwr3 reactor, nuclear propulsion. Submarines · Tier 1 Supplier Tier 1 Supplier
- Rubb Buildings UK company providing military relocatable buildings. Base Operations · Services Provider Services Provider
- Sabre Precision Engineering UK precision manufacturer of weapons components and ordnance parts. Founded in 1993, headquartered in Sheffield, specializes in weapon parts, ordnance components. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- SCG - Systems Consultants Group British company providing engineering and consultancy for defence. Founded in 1989, headquartered in Cheltenham, specializes in engineering consultancy, software. Defence Consulting · Tier 1 Supplier Tier 1 Supplier
- SEA Defence British company producing torpedo countermeasures and naval systems. Founded in 1969, headquartered in Beckington, specializes in torpedo defence, naval decoys. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- SEA Power & Industrial SEA Power & Industrial is a subsidiary based in United Kingdom specializing in power systems and ship integration. Established in 1969, headquartered in Beckington. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- Selex Galileo Electro-Optics United Kingdom-based subsidiary, subsidiary of Leonardo. Specializes in litening, flir, targeting pods for defense and military applications. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Senior Aerospace British aerospace company producing fluid conveyance and structures. Founded in 1933, headquartered in Rickmansworth, United Kingdom, specializes in ducting, fuel systems. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Senior Aerospace Defense SNR.L UK company providing aerospace ducting and thermal. Aircraft Engines · Tier 1 Supplier Tier 1 Supplier
- Senior Aerospace Thermal SNR.L UK company providing heat management systems for military aerospace. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Senior plc SNR British aerospace and defence components manufacturer. Founded in 1933, headquartered in Rickmansworth, United Kingdom, specializes in ducting, structures. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Serco Defense SRP.L UK company providing defense support services. Defence Consulting · Services Provider Services Provider
- Serco Naval SRP.L UK company providing naval base support and maritime services. Base Operations · Services Provider Services Provider
- Silicon Sensing Systems UK company providing MEMS gyros and inertial sensors for defense applications. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Smiths Detection Smiths Detection is a tier 1 supplier based in United Kingdom specializing in explosives detection and cbrn sensors. Established in 1946, headquartered in Watford, United Kingdom. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Smiths Detection CBRN UK company providing threat detection systems. CBRN Protection · Tier 1 Supplier Tier 1 Supplier
- Smiths Detection Defense SMIN.L UK detection company providing CBRN sensors, trace detection, and security screening. CBRN Protection · Tier 1 Supplier Tier 1 Supplier
- Smiths Interconnect Defense SMIN.L UK company providing RF connectors, cables, and microwave components for defense. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Sonardyne Defence United Kingdom-based subsidiary, subsidiary of Sonardyne International. Specializes in navigation, tracking, acoustics for defense and military applications. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Sonardyne Defense UK underwater acoustics company providing military sonar, navigation, and communication systems. Naval Weapons · Tier 1 Supplier Tier 1 Supplier
- Spectra Group Spectra Group provides satellite communications, tactical networks, and interoperability solutions for defense customers. Military Communications · SME SME
- Spectra Group UK British company producing tactical communications and networking. Founded in 2002, headquartered in Herefordshire, specializes in slingshot, tactical satcom. Military Communications · SME SME
- Spirent Communications Defense Spirent Communications provides GPS/GNSS simulation, network test, and cybersecurity testing solutions for defense and intelligence agencies. The company's positioning and navigation warfare simulators and network emulators are used to validate military systems resilience against jamming, spoofing, and cyber threats. Cybersecurity · Tier 1 Supplier Tier 1 Supplier
- Spirent Defense United Kingdom-based subsidiary, subsidiary of Spirent Communications. Specializes in gps simulators, pnt, testing for defense and military applications. Training & Simulation · Services Provider Services Provider
- Spirit AeroSystems Belfast Northern Ireland aerostructures facility producing wings and fuselages. Founded in 1989, headquartered in Belfast, United Kingdom, specializes in a220 wings, a320 fuselages. Composites & Advanced Materials · Tier 1 Supplier Tier 1 Supplier
- SSTL SSTL is a sme based in United Kingdom specializing in small satellites and imaging systems. Established in 1985, headquartered in Guildford, United Kingdom. Space Systems · SME SME
- SSTL Defense United Kingdom-based subsidiary, subsidiary of Airbus. Specializes in smallsats, dmc, earth observation for defense and military applications. Military Satellites · Tier 1 Supplier Tier 1 Supplier
- Supacat Supacat is a British company designing and manufacturing high mobility vehicles for defense including the Jackal and Coyote vehicles. Armored Vehicles · Tier 1 Supplier Tier 1 Supplier
- Supacat Defense United Kingdom-based company, founded in 1981. Specializes in jackal, coyote, hmt for defense and military applications. Armored Vehicles · SME SME
- Supacat HMT UK company providing high mobility tactical vehicles. Armored Vehicles · SME SME
- Survitec Defense UK company providing survival equipment and life rafts for military. Personal Equipment · Tier 2 Supplier Tier 2 Supplier
- Survitec Group Survitec Group is a tier 1 supplier based in United Kingdom specializing in life rafts and survival suits. Established in 1920, headquartered in Birkenhead, United Kingdom. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- Tarmac Defense United Kingdom-based subsidiary, subsidiary of CRH plc. Specializes in rapid repair, concrete, runway for defense and military applications. Base Operations · Tier 1 Supplier Tier 1 Supplier
- Tekever Portuguese-British company developing UAS platforms for maritime surveillance and defence. UAVs & Drones · SME SME
- Teledyne e2v British company producing imaging sensors and RF power devices. Founded in 1947, headquartered in Chelmsford, specializes in ccds, rf tubes. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Teledyne e2v Radar UK company providing RF power devices and sensors for radar systems. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Thales Optronics Periscopes UK company providing submarine periscopes and optronics. Submarines · Tier 1 Supplier Tier 1 Supplier
- Thales Watchkeeper UK company providing Watchkeeper tactical UAV. UAVs & Drones · Tier 1 Supplier Tier 1 Supplier
- Thermoteknix Systems United Kingdom-based company, founded in 1982. Specializes in clipir, microcam, thermal for defense and military applications. Night Vision & Optics · SME SME
- Trident Naval Architecture Naval design firm specializing in warship and submarine design. Founded in 2001, headquartered in Bath, specializes in warship designs, submarine architecture. Submarines · SME SME
- TT Electronics Defense TTG.L UK company providing power electronics and sensors for defense systems. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Turbine Surface Technologies UK company providing turbine coatings and surface treatments. Composites & Advanced Materials · Tier 2 Supplier Tier 2 Supplier
- Tyron Defense Wheels UK company providing run-flat systems for military vehicles. Armored Vehicles · SME SME
- ULTRA Acoustic Systems UK company providing acoustic sensors for ASW. Advanced Sensors · Tier 1 Supplier Tier 1 Supplier
- Ultra Electronics British defence and aerospace company acquired by Cobham, specialising in sonar, communications, and sensors. Naval Weapons · Tier 1 Supplier Tier 1 Supplier
- Ultra Electronics Soldier Systems United Kingdom-based subsidiary, subsidiary of Ultra Electronics. Specializes in power, soldier, c4i for defense and military applications. Soldier Modernization · Tier 1 Supplier Tier 1 Supplier
- Ultra Electronics Sonar UK company providing sonar and underwater systems. Naval Weapons · Tier 1 Supplier Tier 1 Supplier
- Ultra I&C Division of Ultra providing intelligence and communications solutions. Founded in 1993, headquartered in Greenford, United Kingdom, specializes in tactical radios, crypto devices. Military Communications · Tier 1 Supplier Tier 1 Supplier
- Ultra Maritime UK company providing sonobuoys, sonar systems, and ASW solutions for naval defense. Naval Weapons · Tier 1 Supplier Tier 1 Supplier
- Ultra Maritime Defense UK company providing sonobuoys and ASW systems for naval forces. Naval Weapons · Tier 1 Supplier Tier 1 Supplier
- Ultra Secure Mobile UK company providing secure mobile communications and encryption for military and government. Military Communications · Tier 1 Supplier Tier 1 Supplier
- Ultra Sonar Systems British company producing sonar and ASW systems for navies. Founded in 1957, headquartered in Greenford, specializes in hull sonar, towed arrays. Naval Shipbuilding · Tier 1 Supplier Tier 1 Supplier
- Victor Vehicle Systems Designer and integrator of military vehicle electronics and systems. Founded in 2004, headquartered in Coventry, specializes in vehicle computers, display systems. Systems Integration · Services Provider Services Provider
- Vortexa British company providing cargo tracking and energy market analytics. Founded in 2016, headquartered in London, United Kingdom. Intelligence Systems · Defence Tech Startup Defence Tech Startup
- WFEL Defense UK company providing military bridging systems. Logistics & Supply Chain · Services Provider Services Provider
- WFEL Limited United Kingdom-based company, founded in 1969. Specializes in mgb, dry support bridge, bridging for defense and military applications. Surface Combatants · Services Provider Services Provider
- William Cook Defence UK company providing track and vehicle components. Armored Vehicles · Tier 1 Supplier Tier 1 Supplier
- Wyvern Aerospace Wyvern Aerospace is a private company based in United Kingdom specializing in combat drones and ucav. Established in 2015, headquartered in Cardiff. UAVs & Drones · SME SME
- Zaun Fencing UK company providing high-security perimeter fencing. Base Operations · Services Provider Services Provider
- Zebra Intelligence Group Provider of open source intelligence and geospatial analysis services. Founded in 2015, headquartered in London, specializes in osint services, geospatial analysis. Surveillance & Reconnaissance · SME SME