Overwatch
Overwatch Group is an independent British defence company that designs, engineers, and manufactures unmanned aerial systems and precision strike munitions. Founded in 2020 by British forces veterans and headquartered in Wolverhampton, the company builds agile defence technology including the Pholos pack-portable UAS and loitering munitions with kinetic payloads. Overwatch has delivered approximately 800 systems since 2022 and operates with a team of around 30 personnel. The company is self-funded with no disclosed external investment rounds, led by CEO Drew Michael.
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QuadSAT
QuadSAT is a Denmark-based defence technology company founded in 2017 by Joakim Espeland (CEO) and Andrian Buchi (CTO), who met as mechanical engineering students at VIA University College. Espeland, a Norwegian RF engineer with five years of experience in maritime satellite communications, identified inefficiencies in satellite antenna testing that required expensive ship deployments. The company develops drone-based RF measurement and antenna testing systems, with traction including operational campaigns with OneWeb and the European Space Agency. QuadSAT maintains a UK registered office in London to serve NATO-aligned defence customers across Europe. The company raised €9M in Series A funding led by IQ Capital in 2023, followed by a €5M extension in 2025 led by Join Capital and North Ventures.
Arondite
Arondite is a London-based defence technology company building foundational software and AI to power the autonomous age. The company develops a platform that connects disparate autonomous systems, such as drones, ground robots, and AI-powered sensors from any manufacturer, giving human operators clearer oversight and safer operational control. Founded by former Palantir and Helsing veteran Will Blyth and ex-BAE Systems engineer Rob Underhill, the company addresses the growing need for interoperability as militaries adopt a proliferation of new autonomous hardware across the battlefield.
Grayscale AI
Grayscale AI is a London-based startup founded in 2020 by Dragos Stanciu, developing neuromorphic AI systems that mimic human neural networks for autonomous drones, robots, and vehicle navigation. Drawing on computational neuroscience research from the University of Edinburgh and ETH Zurich, the company's technology delivers up to 500x greater energy efficiency than traditional computing with edge processing under 100 milliseconds. Grayscale AI has validated its technology through partnerships with HORIBA MIRA, AVL, and Smart Mobility Living Lab London. The company participates in NATO's DIANA accelerator programme and has received grant funding from Innovate UK and the US Army xTech programme, alongside backing from Techstars.
Delian
Delian Alliance Industries is a Greek and UK-based defence technology company building autonomous systems for NATO and allied forces. Founded by former Apple robotics engineer Dimitrios Kottas, the company takes a vertically integrated approach, developing hardware, sensor fusion, autonomy software, and strike platforms under one roof. Its products include the Lambda Autonomous Surveillance Tower (LAST), which uses video and thermal feeds to detect and track surface targets without GPS, and a pipeline of concealed sea drones. Originally launched as Lambda Automata, the company rebranded and has deployed solar-powered surveillance towers along Greek borders for security and wildfire detection. Delian is headquartered in London with offices in Athens and is positioning itself as a European defence prime for the autonomous warfare era.