
Astron Systems
astronsystems.comHarwell-based developer of Aurora, a fully reusable two-stage small-lift launch vehicle, and the hybrid expander electric-cycle engines that power it.
The who's who of the UK space sector featuring 127 companies, from stellar startups to established primes, sorted into nine categories.
Search by name, description, or parent company, or jump to a category. Restructured for 2026 to reflect changes across the industry as the UK space sector grows.
Launch vehicle developers, launch service providers, and launch brokers.

Harwell-based developer of Aurora, a fully reusable two-stage small-lift launch vehicle, and the hybrid expander electric-cycle engines that power it.

Developing orbital launch services from a seaborne spaceport, with the aim of providing net-zero satellite launch.

Edinburgh-based launch services provider developing the Skyrora XL orbital rocket, the Skylark L suborbital vehicle, and a space tug for in-orbit operations.
Whole-satellite builders, bus manufacturers, system integrators, and primes with UK satellite operations.
Glasgow-headquartered smallsat manufacturer and Space-Data-as-a-Service provider, offering CubeSat platforms, subsystems, and Earth observation data through its VIREON constellation.
Designs and manufactures around a quarter of the world's telecommunications satellites, with major UK sites at Stevenage and Portsmouth producing satellite platforms, payloads, and Earth observation spacecraft.

Glasgow-based PocketQube pico-satellite manufacturer, launch broker, and operator of the Unicorn-2 bus and the Night Lights low-light Earth imaging service.
Defence and aerospace prime whose UK space activities span multi-sensor ISR satellites, secure communications, and space domain awareness; parent of In-Space Missions.

London-based commercial science-satellite operator running the Mauve UV-visible spectroscopy mission and developing the Twinkle exoplanet spectroscopy satellite, with data delivered to researchers by subscription through its Stardrive platform.

Aerospace prime whose UK space activities span satellite communications, GPS and PNT systems, and collaborative R&D on next-generation satellite technologies.

Oxford-based supplier of 1U–27U CubeSat buses, subsystems, and desktop thermal-vacuum and vibration test equipment for small spacecraft.

Designs and manufactures components and subsystems for communications, Earth observation, and scientific satellites, including inertial sensors, guidance hardware, and avionics.
Hampshire-based designer, builder, and operator of bespoke 10–300 kg satellite missions, including hosted-payload rideshares and multi-sensor ISR spacecraft.
Defence and space systems prime with UK operations across 11 sites, supplying satellite communications, RF payloads, and space domain awareness systems.
US defence and aerospace prime whose UK space activities include space domain awareness, satellite ground systems, and support for UK spaceport development.
Robotics, satellite systems, and geo-intelligence provider; the UK arm in Harwell works on 5G direct-to-device satellite missions and software-defined satellite payloads.
Nano- and microsatellite bus manufacturer and mission integrator, with UK operations in Basingstoke and Didcot offering standard and custom platforms plus full MAIT and mission services.

Harwell-based provider of end-to-end smallsat missions and operator of the OpenConstellation shared satellite infrastructure and DataCosmos analytics platform.
Defence and aerospace prime whose UK space activities cover space domain awareness, orbital analysis services, and satellite communications, with manufacturing in Scotland.
Guildford-based pioneer of the smallsat industry, building and operating small satellites for Earth observation, navigation, science, lunar, and defence missions.

Reading-based satellite manufacturer supplying payloads and subsystems for telecommunications, navigation, Earth observation, and science missions, including LISA gravitational-wave mission hardware.
Antennas, RF, optics, electronics, materials, structures, on-board software, and engineering tools.

Bletchley-based supplier of SpaceWire test, measurement, and IP solutions for ground and in-flight use.
Southampton spinout supplying high-performance 5G/6G physical-layer IP for non-terrestrial networks.
Supplier of Ada and SPARK development tools, compilers, and qualified runtimes for mission-critical space and avionics software.
Salford-based provider of impartial technical advisory and programme management support to the UK space enterprise across research, design, acquisition, and operations.
Reading-based maker of multi-orbit, multi-band satellite communications terminals (Hydra range); formerly Isotropic Systems.

Scunthorpe-based manufacturer of cable assemblies and Cryonnect cryogenic interconnects for flight and ground observation applications.
Edinburgh-based provider of FPGA-based boards and systems for computer-intensive applications including space payloads and signal processing.

Distributor of specialist electronic components, products, and systems for aerospace, space, military, and defence applications.

Oxford-based developer of optical communication terminals for space-to-space and space-to-ground laser links.

Preston-based custom software house for the space industry, building satellite thermal mapping tools, mission control dashboards, CubeSat operations software, and ML for Earth observation.

Mechanical and thermal engineering partner for space hardware, with flight heritage on ESA Euclid VIS, PLATO N-FEE, ExoMars, SMILE, and Comet Interceptor.
Designer and developer of complex critical equipment for Big Science and space markets, with a UK subsidiary at Westcott.

Sedgefield-based designer and manufacturer of optical modulators for satellite and aerospace communications.

Bedford-based printed circuit board and electronic system assembly specialist supplying LEO satellite operators.
Edinburgh-based developer of off-the-shelf, component-based flight and ground software for satellite mission development and operations.

Imperial College London spinout developing high-frequency inductive wireless power transfer systems for lunar and in-space applications.
Defence and space manufacturer supplying RF, microwave, and satellite communications subsystems and antennas.

Glasgow-based space engineering practice delivering mission-enabling products and small satellite missions, with a focus on AI and quantum payloads.

Warrington-based tribology specialist (friction, wear, and lubrication) operating the European Space Tribology Laboratory for ESA.

Cornwall-based designer and manufacturer of antennas, precision microwave components, and test equipment.
Bristol-based manufacturer of automated production equipment for advanced carbon-fibre composite parts used in space and aerospace structures.
Chesham-based supplier of hermetically sealed feedthroughs, vacuum flanges, and D-sub connectors for space and high-vacuum applications, qualified to ESA/ESCC-3401.

UK arm of a Canadian engineering-software firm authoring Simcenter 3D Space Systems Thermal and distributing Siemens digital-simulation tools for satellite and launcher design.

Norwich-based UK arm of a global provider of semiconductor die and wafer processing, packaging, test, and development for aerospace, defence, and harsh environments.

Glasgow-based designer of low-cost satellite subsystems, including the KissCAM miniature engineering camera, star trackers, and Ethernet streaming video.

Sheffield-based natural-intelligence AI company providing autonomy software for robotics and spacecraft.
Didcot-based developer of AI tools for defence and space that process sensor and intelligence data in a more human-like way.
Harwell-based designer of deployable antennas and structures built from proprietary composite materials for small satellites.

University of Leicester spinout building americium-241 radioisotope power systems — RHUs, RTGs, and Stirling generators — for deep-space missions.
Cambridge-based RF and mmWave radar engineering consultancy, including rendezvous and proximity operations radar for in-orbit servicing missions.
Farnborough-headquartered provider of technology-based services and solutions across defence, security, and space, including PNT, space domain awareness, and in-orbit experimentation.
Surrey-based UK arm developing radiation-hardened, AI-capable computing systems for spacecraft.

Romsey-based science and engineering company providing sensors, communications, and signal-processing technology for commercial, defence, and space customers.
Derby-based developer of a space micro-reactor providing nuclear power for lunar surface and in-space applications.

Manchester spinout developing a flexible, lightweight, switchable graphene-based tile system for spacecraft thermal control.

Edinburgh-based developer of smart antennas and tunable RF MEMS solutions for satellite communications terminals.

Supplier of modular test solutions for the lifecycle of electronic, microwave, optronic, and mechatronic systems.
Automated test and assurance solutions for networks, cybersecurity, and positioning, navigation, and timing systems.

Havant-based provider of EEE component services and PCB assembly to ESA space standards.
Dundee-based supplier of SpaceWire and SpaceFibre products, IP, and test equipment for on-board spacecraft data handling.

Designer and manufacturer of microwave components, sub-systems, and space imaging sensors, including the Chelmsford-based Teledyne e2v.

Luton-based provider of space applications and services, including satellite operations, Earth observation data platforms, and consulting and engineering services.

Developer of Vantablack super-black coatings used in deep-space imaging, Earth observation, and satellite navigation instruments.
Chemical, electric, and novel propulsion for launchers and in-space platforms.

Westcott-based specialist in spacecraft propulsion, propellant chemistry, and launch-site fuelling services.

Developer of compact high-thrust electric plasma thrusters for satellite servicing, orbital manoeuvring, and deep-space missions.

Westcott-based developer of water-electrolysis thrusters and throttling control valves for in-space propulsion.
Bletchley-based developer of fusion-electric and hybrid propulsion for deep-space missions.

Birmingham-based developer of water-based propulsion for CubeSats and smallsats.
Operators of satellite communications networks across GEO, MEO, LEO, and IoT.

Developer of a space-based cellular broadband network accessible directly by standard smartphones.

Provider of Ka-band satellite communications across Europe, the Middle East, and Africa via the HYLAS fleet.
Provider of global mobile satellite communications, operating as Inmarsat Maritime within Viasat.

Harwell-based IoT-over-satellite operator using small satellites and open LoRaWAN standards.
Operator of a low-Earth-orbit satellite constellation delivering global high-speed, low-latency broadband, now part of the unified Eutelsat brand.

Distributor of satellite communications services — VSAT, airtime, and satellite phones — for organisations operating in remote environments.
Provider of satellite broadband and secure networking across aviation, maritime, enterprise, and government and defence markets.

Cambridge-based UK subsidiary providing satellite IoT connectivity using LoRa over LEO via the Wyld Connect platform.
EO data providers, geospatial analytics, and downstream applications across climate, agriculture, energy, infrastructure, and defence.

London-based high-precision geolocation provider delivering accurate positioning in challenging urban and infrastructure environments.

Plymouth-based Earth observation specialist developing satellite data processing algorithms and ground-segment software for marine, coastal, and atmospheric applications.
Reading-based environmental EO firm operating the Assimila Data Cube, fusing satellite, model, and ground data for greenhouse gas, land, and peatland monitoring.
Provider of satellite-derived subsurface intelligence using L-band SAR, used by water utilities to detect leaks and assess buried infrastructure.
Predicts commodity prices using AI applied to alternative data, including satellite imagery, to help manufacturers manage price volatility.
London-based climate-risk analytics platform using satellite EO and hazard models to score physical climate risk across global asset portfolios.
Edinburgh-based no-code Earth observation SaaS platform built on Google Earth Engine for geospatial analysis.

Surrey-based geospatial analytics company combining optical satellite imagery with AI, including the SAVANT metals smelting monitoring service.

Edinburgh-based remote sensing and AI company building satellite data platforms, with a focus on cryosphere and climate applications.
Edinburgh-origin environmental SaaS platform for sustainability, deforestation, and supply-chain risk monitoring, now part of EcoOnline's ESG software.
AI-powered biodiversity and vegetation mapping using hyperspectral satellite data for forest and ecosystem monitoring.
Birmingham-based provider of independent research derived from the analysis of satellite imagery.

Provider of SIGINT products and space-based Maritime Domain Awareness intelligence through its AMBER satellite constellation.

Aerial and satellite imagery analytics for agriculture, now powering Agreena's measurement, reporting, and verification platform for regenerative farming.

Operator of a synthetic aperture radar smallsat constellation, providing all-weather imagery and analytics to governments and commercial customers.

Guildford-based microwave remote sensing engineering firm, developing altimetry and SAR processing algorithms and calibration services.

London-based curator of geospatial data from space and the ground to create actionable intelligence for insurance and government.

Combines satellite data with community and ground intelligence to monitor the social and environmental impacts of critical infrastructure projects.

London-based provider of weather data, forecasts, and environmental analytics drawing on remote sensing and big-data science.

Plymouth-based Earth observation consultancy and algorithm developer processing satellite data for ocean, land, and atmosphere applications.

London-based provider of SAR-driven agricultural analytics for the crop insurance industry, automating acreage reporting and claims validation.

Stevenage-based platform applying satellite data and AI to originate and manage solar power purchase agreements.

Edinburgh-based climate adaptation consultancy combining EO data, finance, and skills to support resilience planning.

Geospatial analytics provider using satellite data to monitor dams, water pipeline networks, and forests for asset owners and utilities.

London-based operator of the HotSat thermal Earth observation constellation, delivering high-resolution mid-wave infrared imagery and analytics.
Leeds-based InSAR provider converting radar satellite data into high-resolution ground-movement intelligence for infrastructure monitoring.
Operator of a LEO smallsat constellation delivering GNSS radio-occultation weather, maritime AIS, and aviation ADS-B data services.

Harwell-based satellite analytics platform delivering risk-based operations and maintenance intelligence for transmission and distribution utilities.
London-based carbon credit ratings platform using satellite, LiDAR, and machine learning to grade projects on an AAA–D scale.
Natural-resources analytics provider turning satellite and 3D geospatial data into insight for mining, energy, and exploration.
On-orbit servicing, debris removal, in-space manufacturing, microgravity, life sciences, lunar & deep space operations, and space-based energy.
On-orbit servicing and debris-removal missions across all orbits; UK arm based at Harwell developing the ELSA-M servicer.

Space logistics and transportation provider; UK subsidiary at Harwell offers last-mile satellite deployment and in-orbit servicing via the ION orbital transfer vehicle.
Cranfield spinout building miniaturised in-orbit biotech labs (SpaceLab) for pharmaceutical research, biomanufacturing, and life-science payloads in microgravity.

Norfolk-based provider of microgravity testing and suborbital launch services, including the LOUIS drone-based microgravity platform and ISAAC suborbital rocket.
Harwell-based designer and operator of microgravity payloads and bioreactors for life-science and biotech research on the ISS and in LEO.

Develops autonomous rendezvous and proximity operations (RPO) technology for satellite servicing, rideshare hosting, and in-space logistics.
Peterborough-based LCD vat-polymerisation 3D printer manufacturer developing autonomous in-space 3D printing platforms under its CosmicMaker programme.
Cardiff-based in-space manufacturing company producing advanced materials in orbit and providing microgravity-as-a-service via its ForgeStar returnable satellites.

Develops space-based solar power systems using the CASSIOPeiA design, including the Harrier prototype demonstrating 360-degree wireless power beam-steering.
Teleports, ground stations, mission control software, and Space Domain Awareness (tracking, SSA/SST).

Cornwall-based satellite communications teleport and deep-space ground station services provider.

Develops the Mithril avionics suite — machine-vision sensors and edge-compute payloads for in-orbit detection and characterisation of space objects, supporting sovereign SDA.

Provides precise positioning of satellites and space debris using satellite laser ranging (SLR), with commercial SSA services for operators and governments.

Space Situational Awareness (SSA) and Space Surveillance and Tracking (SST) services provider, operating as Raytheon NORSS.

Rugby-based teleport operator running 60+ antennas with line of sight to over 100 communications satellites for broadcast and data services.

Produces SpaceTrak, a launch and satellite database widely used across the space industry for mission history and reliability analysis.
London-based operator of an AI-driven optical SSA/SDA telescope network using visible and SWIR sensors for sovereign UK space surveillance and tracking.
Quantum key distribution, post-quantum crypto, and secure communications for satellites and ground links.

Belfast-based provider of hardware-rooted IoT and machine-to-machine security, including quantum-secure communications for space and satellite links.

Bristol-based developer of chip-scale Quantum Key Distribution (QKD) hardware for secure satellite and terrestrial communications.

Cambridge-based developer of quantum networking technology that interconnects quantum processors to enable modular, scaled-out distributed quantum computing.
Cambridge-rooted quantum computing company developing trapped-ion hardware and software for fault-tolerant quantum computing.
Oxford spinout producing the Zenith Quantum Random Number Generator (QRNG) for secure space and terrestrial communications.
The list draws on a wide range of UK Government sources, including grant programmes, recently funded company registers, and the established primes that anchor the industry. It also incorporates independent research and reader submissions through the “Suggest a Company” form.
The goal is a comprehensive, current view of who's actually building, launching, and operating in the UK space sector today.
Data current as of 26 May 2026.
The current 2026 list, spanning startups through established UK primes.
New entrants identified through UK Government grant rounds, funded-company registers, and reader submissions.
From launchers and propulsion to ground segment, the in-space economy, and secure communications.
UK Government grant programmes, funded-company registers, established-prime rosters, independent research, and reader submissions.