AI & Defence Software defence companies in the UK
We track 53 AI and defence software companies in the UK, most of them in London and Cambridge. 13 of them are hiring now, with 40+ open roles. Among them are Arondite, Faculty and MARSS Group.
All AI & Defence Software Companies in the UK
UK defence software company building Cobalt, an AI-powered mission orchestration platform for autonomous systems, C-UAS, recce-strike and hybrid naval operations.
Applies decision intelligence to government, defence and critical infrastructure, combining simulation, digital twins and AI agents in a platform called Faculty Frontier.
Builds AI-powered command and control systems for counter-drone defence, maritime security and critical infrastructure protection, deployed at over 60 sites worldwide.
Builds physics simulation platforms that use machine learning to accelerate engineering design for aerospace and defence applications.
Quaisr builds a SimOps platform that connects simulations, live data and AI for physics-grounded decision-making in defence, aerospace and other complex engineering environments.
Builds edge AI camera systems and GPS-denied autonomy software for small drones, enabling security teams and military units to operate in environments where cloud connectivity and external infrastructure cannot be relied on.
Builds modelling and simulation software for strategic decision-making, creating synthetic environments and digital twins for defence and national security customers.
Builds synthetic environment software for military training, command and control, and battlefield intelligence for armed forces worldwide.
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.
Builds Mastermind, an edge-native agentic AI box that turns cheap third-party drones into coordinated autonomous squads operating in denied environments. Raised $2.1M pre-seed in 2026 led by Seraphim Space with backing from the UK National Security Strategic Investment Fund.
Builds brain-inspired autonomous AI software for robots and drones, using Active Inference and the Free Energy Principle to enable adaptive decision-making on edge devices without large training datasets.
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.
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.
UK defence training technology company building data-enabled military training systems, smart facilities, robotic targets and UAS simulation for tactical readiness.
Builds AI software that processes vast amounts of open-source and classified information to deliver intelligence analysis for defence, national security and commercial organisations.
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.
Builds a synthetic battlefield platform where autonomous drones, missiles and uncrewed vehicles train and harden against adaptive threats before reaching a real conflict.
Atheras Analytics develops AI software for resilient satellite networks, forecasting outages and optimising ground-segment and gateway decisions for mission-critical satcom operations.
AI quoting platform for manufacturers, extracting materials and pricing inputs directly from CAD files and drawings. Selected by UK Digital Catapult and National Composites Centre for the Defence Testbed Accelerator to make defence Technical Data Packs securely discoverable across distributed additive manufacturing supply chains.
UK defence technology SME building data-driven training, performance analytics and decision-support products for military organisations at the tactical edge.
Craft Prospect builds small-satellite systems, onboard AI and quantum-secure space technologies for secure, autonomous space missions.
UK data and AI startup developing MIRA AI for natural language querying across disparate enterprise datasets. Selected for Digital Catapult's Defence Testbed Accelerator with the MoD to build secure Technical Data Pack connectors for defence supply chains.
Delivers safety-related control, instrumentation and mission systems for UK nuclear facilities and defence platforms across naval, air and land domains.
Multi-use technology company developing closed-source intelligence systems and threat detection platforms, focusing on OSINT capabilities and situational awareness solutions.
Commercial geospatial intelligence company that applies AI and machine learning to multi-operator satellite imagery to deliver decision-ready insights to industry and government. Selected for the AWS European Defence Accelerator and based in Guildford, Surrey.
Develops GPS-free inertial navigation and flight termination systems for drones and crewed aircraft, including the SnapShot nano-drone funded by a £226,200 DASA contract. ITAR-free UK sovereign capability accredited to ISO 9001.
UK drone technology and training company behind JACKAL, a military UAS platform designed for rapid, affordable deployment by government and defence users.
Forcys develops underwater defence technology, bringing together sonar, maritime sensing and autonomous-system expertise for naval and subsea security missions.
Specializes in neuromorphic computing and AI to enable fully autonomous drones and robots using optimization-driven AI that mimics human neural networks.
Inzpire provides defence training, mission systems and operational support for military aviation, battlespace management and synthetic training programmes.
Landguard Systems designs and manufactures specialist ISTAR radio systems, tracking devices and software-defined radios for government, defence and law-enforcement customers.
UK counter-drone company building the Air Intelligence System with PDAR passive RF detection (70 MHz to 6 GHz), Hera long-range cameras, Apollo acoustic direction finding, and Orion autonomous drone defeat effectors. Clients include the British Royal Navy, MOD and Civil Aviation Authority.
Lodestar Space develops autonomous space-security systems for protecting high-value satellites and supporting orbital defence missions.
Maritime autonomy software for uncrewed surface vessels, including GuardianAI for defence applications. Technology powered the Mayflower Autonomous Ship's transatlantic crossing and is used by Plymouth's USV cluster.
Builds AI-powered airport and national infrastructure security screening products including Deeper Scan electronic-device validation and NexuSec natural-language CCTV search. Developed Deeper Scan with £80,000 DASA funding and Dstl technical support.
London defence tech startup building OccamX, a retrofit computer-vision autopilot for FPV drones that enables autonomous target tracking without GPS or continuous manual control. Raised €3M pre-seed and approved for Ukrainian Brave1 integration testing.
Develops layered integrated security solutions and counter-drone technologies for critical site protection. Specializes in AI-powered threat detection systems.
UK counter-UAS defence startup developing modular, open-architecture aerospace defence systems with AI-driven drone detection, tracking and layered response capabilities.
AI and robotics company developing human-like artificial intelligence solutions for defence, space and security sectors, including AVIS AI platform and STRIDER autonomous robots.
Plextek provides advanced engineering and technology development for defence applications, including sensing, communications and mission-critical electronics.
Scotland-based defence AI company with the Deep Truth machine learning framework, the SkySpyke 360-degree passive counter-drone detection system, the WiSAD passive RF surveillance detector and the MASC AI-generated adaptive camouflage pattern generator.
London cybersecurity company building AI models for reverse engineering and binary analysis to verify compiled software, firmware and third-party artifacts for defence and enterprise teams.
Incident modelling consultancy building CBRN hazard, cyber attack, and disease dispersion simulation platforms for UK MoD, Dstl, and government agencies. Ploughshare spin-out commercialising Dstl research.
Develops VOYAGER AI maritime autonomy software that converts crewed vessels into uncrewed surface vessels with IMO Degree 4 autonomy, sold to government and defence customers. Opened Southampton UK headquarters in 2025 with offices in USA, Canada and India.
Roke builds defence and security technologies across AI, autonomy, cyber, secure communications and electromagnetic-spectrum operations.
SeeByte develops software for uncrewed and autonomous maritime systems, including mine-countermeasure toolboxes, mission autonomy and target-recognition systems.
Sirius Insight develops AI-enabled maritime surveillance and decision-support systems for monitoring coastal, port and offshore environments.
UK space domain awareness startup delivering real-time optical space intelligence from a sensor network and AI-driven platform for governments and satellite operators.
Sovereign drone intelligence platform providing defence-grade autonomous BVLOS operations, multi-sensor capture and analytics for critical infrastructure and defence. Raised £8.3m seed in November 2025 led by Rokos Capital Management.
Edinburgh mathematical modelling consultancy building bespoke algorithms for space situational awareness, spacecraft thermal modelling and classified defence data projects. Longstanding partner of the European Space Agency and UK MoD's SEAS DTC programme.
AI computer vision for unmanned systems and counter-unmanned defence. Advanced surveillance and threat detection systems.
Belfast-based sovereign AI company building Collective, a modular AI operating system deployable on air-gapped, edge and on-prem infrastructure. Raised £10M Series A in 2025 and is one of only four SMEs holding an MoD enterprise agreement.
ZeroUSV designs, builds and operates autonomous uncrewed surface vessels for defence, security, survey and scientific offshore missions.
