The best Defence companies in London

Builds combat-proven unmanned air, land and sea systems, including Magura sea drones, for allied militaries.

UK arm of Anduril, supplying autonomous systems and Lattice software to British defence customers.

Munich-headquartered defence AI company building strike drones, underwater systems and battlefield software, with a London office.

Builds a sovereign control layer so governments and defence groups can run AI and critical workloads securely.

Builds synthetic battlefields where autonomous defence systems and military AI are trained and tested.

Builds Axiom, a mobile platform for verified identity, encrypted communications, task tracking and payments for defence, humanitarian and security teams.

Simulation and digital-twin software for defence, government and infrastructure decision-making.

Software that uses a site's existing cameras and sensors to flag abnormal behaviour in near real time at transport hubs, energy sites and large venues.

Builds low-cost autonomous defence systems including targeting systems, surveillance towers, drones and software.

Defence software (Cobalt) that lets operators control mixed fleets of drones, robots and sensors from one platform.

Tracks satellites and debris from low Earth orbit to GEO using its own telescope network and AI platform.

Autonomy software that installs on existing military drones without redesigning them, adding autonomous detection, tracking and targeting to mass-produced FPV drones.

AI software that helps defence and security teams analyse large volumes of information and make faster decisions.

AI and simulation software for military training, mission planning, wargaming and command and control.

Refute is an AI platform that detects coordinated online disinformation campaigns early and recommends how to respond.

Builds low-cost modular autonomous strike drones and swarm software for UK and NATO militaries.

Makes NightFighter radio frequency jamming and electronic warfare systems that detect and bring down hostile drones.

AI vision software that turns defence and security cameras into autonomous threat detectors, including drones.