Defence Tech Companies in United Kingdom

Applies decision intelligence to government, defence and critical infrastructure, combining simulation, digital twins and AI agents in a platform called Faculty Frontier.

Faculty Frontier

A decision intelligence platform built on the OUDA framework (Observe, Understand, Decide, Act). It connects organisational data and AI models, simulates the impact of decision strategies on KPIs via a Computational Twin and Simulation Engine, identifies optimal approaches using the AI Decision Agent (ADA), and deploys them into operational workflows. Used across defence, life sciences, energy and financial services.

Runs a distributed network of precision factories powered by MasonOS, its proprietary software platform, manufacturing high-precision components for aerospace, defence and critical industries.

Develops ultra-low Earth orbit satellites and ion propulsion systems to bring higher-resolution imaging, direct-to-device connectivity and weather intelligence closer to Earth.

Builds counter-drone net capture systems and autonomous electro-optical targeting platforms for military and government security operations.

Designs memory-safe semiconductors with post-quantum cryptography for securing servers, edge devices and critical infrastructure against both current and quantum-era threats.

Builds edge AI computer vision systems and drone autonomy software for security, anti-poaching and military applications where cloud connectivity and GPS are unavailable.

Builds physics simulation platforms that use machine learning to accelerate engineering design for aerospace and defence applications.

Builds autonomous systems software that links disparate unmanned hardware through a single command interface for defence operations.

Builds quantum networking hardware that connects quantum processors into distributed computing architectures, enabling commercial-scale quantum computing.

Quantum Networking Unit (QNU)

A 19-inch rack-mount system hosting photonic integrated circuits that distributes quantum entanglement across connected processors. Launched in June 2025, the QNU provides reconfigurable connectivity between quantum computing nodes for datacenter-scale quantum architectures. Nu Quantum describes it as the world's first product of its kind, delivering 99.7% entanglement fidelity at a 1 MHz attempt rate.

Entanglement Fabric

Nu Quantum's distributed quantum computing architecture, combining its networking hardware with a software abstraction layer for qubit-agnostic application development. The Entanglement Fabric defines how modular quantum processors interconnect and scale, and is the overall framework that the QPI and QNU are designed to populate.

Quantum technology company developing miniaturized cold atom systems for quantum sensing, computing and communications. Creates portable hardware solutions using "supermolasses" technique for quantum devices, backed by NATO and selected for NATO DIANA accelerator.

Builds modelling and simulation software for strategic decision-making, creating synthetic environments and digital twins for defence and national security customers.

Skyral Core

A modular toolkit of simulation and modelling components for building high-fidelity synthetic environments, supporting agent-based modelling of large civilian populations with real-time behaviour tracking. The foundation platform on which Skyral's defence and government applications are built.

ARCUS

An agent-based simulation laboratory for operational planning that provides real-time scenario exploration and Blue-Red adversarial course-of-action testing. Delivered for the UK MoD via the Accelerated Capability Environment, built in consortium with Frazer-Nash Consultancy and Principle One.

Skyral Mirror

Strategic digital twin platform that models human behaviours alongside real-time infrastructure systems including transit, power and telecoms networks for entire cities and countries. Used for vulnerability assessment, infrastructure resilience planning and consequence analysis.

Developer of cutting-edge SATCOM terminals for defence operations with unique capability to connect simultaneously to multiple satellites across different orbits. Provides Hydra terminal range for defence and government applications.

Technology company specializing in AI-based spatial intelligence platforms that provide hyper-scalable synthetic environments for governments and commercial enterprises to enable real-time situational awareness and decision-making.

Rowden Technologies delivers information-sharing and sensing solutions for defence, national security, and emergency services. The Bristol-based company specializes in networking, sensing, and computing systems, combining rapid assimilation of commercial technology with deep manufacturing expertise.

AI-driven information intelligence company providing Vantage software for defence, national security, and commercial sectors. Uses cutting-edge generative AI and machine learning to analyze unstructured data at speed, enabling rapid intelligence analysis for military operations.

Cybsafe is an adaptive Human Risk Management platform that helps security teams reduce risky behaviors at scale. The GCHQ-accredited software delivers behavioral cybersecurity using science-backed approaches, powered by SebDB - the world's security behavior database.

Integrated risk management and analytics company focused on managing digital vulnerabilities inherent in third-party ecosystems. CyDesk platform uses AI and machine learning to automatically evaluate risks from over 900 data sources for cybersecurity, compliance, and business risk management.

Automated AI red teaming and security testing. First company to apply dynamic application security testing methodology to AI systems.

Deep-tech AI startup applying Active Inference and the Free Energy Principle to create autonomous decision-making systems that can operate on-device and make human-like decisions in real-world scenarios.

Quantum-safe encryption technology company providing cybersecurity solutions via satellite and terrestrial forms. Develops QuantumCloud platform delivering quantum-resistant encryption to protect data from current and future threats including quantum computer attacks.

Designs and manufactures electronic-scanning ground-based radar systems for surveillance of moving objects on land, coastlines and in the air. Their solid-state micro Doppler radars provide 24/7 surveillance capabilities for border security and military force protection.

Develops quiet, safe electric propulsion systems and jet engines for aircraft including drones, air taxis, and regional aircraft to accelerate sustainable aviation.

Aspen 212

A 212mm ducted fan propulsion unit producing 5 kg static thrust at 500g weight, achieving 93% noise reduction and 45% greater efficiency than an open propeller of the same diameter.

Sycamore 160

A compact 160mm ducted fan engine for fixed-wing sub-25kg UAVs producing 6 kg thrust at 792g, designed for 26 m/s cruise speed with 75% noise reduction.

Hemlock

Ultra-high-speed ducted fan engine designed for fast fixed-wing drone applications, capable of flight speeds up to 125 m/s while maintaining low acoustic signature.

Technology company building Axiom, a secure workforce management platform that helps organizations verify, support, and pay their globally dispersed teams while managing operations at scale.

Develops layered integrated security solutions and counter-drone technologies for critical site protection. Specializes in AI-powered threat detection systems.

FACE

AI-powered command and control platform that fuses data from 70+ sensor types across 45+ vendors into a single interface, processing over 400 concurrent threat decisions in real-time per site.

SKYSIGHT

AI-enabled optical detection system combining fixed wide-angle and PTZ cameras to autonomously detect, track, and classify drones, vehicles, and personnel without continuous operator monitoring.

Counter-Drone Integrated System

Layered security architecture combining RF sensors, 360-degree radar, directional radar, EO/IR cameras, and INSIGHT AI analytics to detect and track unauthorised drones across airports and critical sites.

Earth observation company providing the world's highest resolution commercial thermal imagery from satellites to monitor climate change, energy efficiency, and economic activity with 3.5m resolution thermal data.

UK-based company providing a Generative AI Synthetic Data Cloud platform that creates fully annotated synthetic data and trains computer vision algorithms at scale for various industries.

52 North Health is a University of Cambridge spin-out developing advanced medical devices for nuclear emergency preparedness. Selected for NATO DIANA, their ARC™ product strengthens medical resilience capability, enabling remote triaging and treatment monitoring of those at risk of radiation sickness.

UK leader in AI safety, security, and assurance providing testing, evaluation, and monitoring of AI systems. Works with UK Government's AI Safety Institute and Ministry of Defence to identify AI vulnerabilities and enable safe AI deployment in critical defence environments.

Full-stack photonic quantum computing company developing quantum technologies for defence, aerospace, cybersecurity and communications applications. Provides quantum computing platforms, quantum communication systems, and quantum cryptography solutions.

Developer of modular military aircraft systems featuring common core fuselage with interchangeable components for training and operational roles. Creates advanced jet trainers, basic trainers, and light attack variants with digital engineering and reconfigurable avionics.

Specializes in photonic, laser, fiber-optic and electrical/electronic solutions for aerospace, defence and space harsh environments. Provides high-quality engineered photonic solutions including fiber optic cable assemblies, free space optics, and optical components.

Space manufacturing company developing hardware for large-scale crystallization of protein drugs in microgravity. While primarily focused on pharmaceuticals, their space manufacturing capabilities and orbital operations have potential dual-use applications.

Interceptor missile systems including Skyhammer and Starhammer. Advanced missile defence and interception technology.

Multi-use technology company developing closed-source intelligence systems and threat detection platforms, focusing on OSINT capabilities and situational awareness solutions.

Develops next-generation navigation and positioning software using Supercorrelation technology to enhance GNSS accuracy for smartphones, wearables and autonomous vehicles.

Cybersecurity company that provides physical network disconnection technology through the FireBreak platform, enabling remote control of network connectivity without using the internet for ultimate protection against cyber threats.

Gravity Industries develops human flight technology including jet suits, creating the ultimate freedom of true personal flight experiences.

Specializes in neuromorphic computing and AI to enable fully autonomous drones and robots using optimization-driven AI that mimics human neural networks.

Synthetic environments and military simulation platform used for NATO defence training and wargaming. Raised over $700M in total funding.

UK's leading compound semiconductor development and fabrication company, manufacturing advanced devices for defence, communications, and energy applications.

GaN RF MMICs

Monolithic microwave integrated circuits for radar and secure communications, enabling low noise amplifiers, high power amplifiers, and medium power amplifiers for defence and satellite systems.

MEMS Sensors and Actuators

Custom MEMS devices including accelerometers and microfabricated vapour cells for atomic clocks and magnetometers, with over 50 different device types manufactured across aerospace, defence, and space exploration.

Builds chip-based quantum key distribution (QKD) and quantum random number generation (QRNG) hardware for securing defence, telecoms and critical infrastructure against quantum-era threats.

British company developing disruptive maritime capabilities including advanced littoral, surface, and subsurface autonomous platforms for defence and commercial applications using cutting-edge composite materials and rapid prototyping.

K3 Scout

An 8.4m autonomous USV with 55-knot top speed, 650 NM range, and 600 kg modular payload capacity, available in three variants up to the 18.6m MAX with 10,000 kg payload and 2,000 NM range.

K4 Manta

An all-electric foiling uncrewed surface-subsurface vessel (USSV) that transits at up to 45 knots on the surface before submerging to 10m depth for covert ISR, loitering, or strike missions.

K5 Kraken

A 15.25m armed maritime precision engagement platform hitting 65 knots, carrying twin 7.62mm remote weapon stations, four multi-role missiles, and four aft-launched torpedoes for crewed or autonomous operations.

Leading exposed data intelligence platform with Gen AI Agents for threat detection that continuously monitors for exposed data and provides high fidelity intelligence for cybersecurity risk management.

Company Monitoring

A continuous alerting service that detects when an organisation or its third-party suppliers appear in data breaches, analysing exposed files to identify PII, credentials, financial documents, and source code.

Data Scanning

AI-powered analysis of breached datasets that extracts and classifies exposed data entities at a rate of 629 per second, enabling incident response teams to triage and remediate data exposures 41x faster than manual methods.

Company Scoring

A risk scoring engine that rates organisations based on the volume and sensitivity of their exposed data, used by cyber insurers, attack surface management providers, and supply chain security teams.

Plasma thruster propulsion systems for satellites and space vehicles. Oxford University spinout advancing in-orbit maneuvering.

NiDAR autonomous threat detection and command platform for maritime surveillance and critical infrastructure protection.

Metahelios develops highly advanced cameras for defence and space applications using optical metasurfaces. The company is the first and only in the world to design and manufacture metasurface-integrated camera solutions, collaborating with the UK Ministry of Defence on imaging nanotechnologies for surveillance and material classification.

British defence technology company pioneering design, engineering and manufacture of unmanned aerial systems and precision strike payloads for defence applications.

Pholos

A 4.5 kg coaxial multi-role tactical UAV with static loiter capability, ultra-low noise signature, and interchangeable kinetic and non-kinetic payloads for precision strike and ISR missions.

PteroDynamics Transwing UAS

VTOL fixed-wing UAS with a folding Transwing design that combines vertical takeoff with long-range fixed-wing endurance, distributed exclusively by Overwatch in the UK, Saudi Arabia, and UAE.

HEX Munitions

A family of platform-agnostic kinetic payloads benchmarked to STANAG 4187 safety standards, available in multiple sizes and effects with supply-chain-resilient designs.

AI and robotics company developing human-like artificial intelligence solutions for defence, space and security sectors, including AVIS AI platform and STRIDER autonomous robots.

Award-winning quantum technology spinout from Oxford University developing quantum random number generators (QRNGs) that provide verifiably secure random numbers for cybersecurity applications.

Provides drone detection services and autonomous defence solutions including counter-UAS systems, with global defence networks spanning 40+ countries.

Laser-based shot detection and positioning system for military rifles, enabling instant sniper location identification. DASA-funded.

Develops high-precision MEMS inertial and gravity sensors for navigation, aerospace, defence, and subsurface exploration applications.

Slipstream Design develops advanced RF and digital signal processing systems for defence, security, telecommunications, and space. Their flagship ASTRO platform is an ultra-wideband adaptive radio processor delivering resilient sensing and communication technology for mission-critical operations in contested electromagnetic environments.

Recovery and recycling technology for aerospace composite waste, reducing defence supply chain dependency on virgin materials. NIF-backed.

AI computer vision for unmanned systems and counter-unmanned defence. Advanced surveillance and threat detection systems.

Zelim develops intelligent maritime safety and rescue technology to make oceans, seas and waterways safer. The company provides advanced detection, tracking, and alerting systems including ZOE (intelligent detection system), SWIFT (rapid man overboard recovery system), and GUARDIAN (uncrewed rescue vessel). Zelim serves the cruise/passenger and offshore energy sectors with ISO 9001 certified solutions.