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Deep Tech Companies in Portsmouth: 65 Active Firms (2026)
Deep tech companies develop science-led hardware, software and frontier technologies for industrial and digital markets around Portsmouth.
Buying centres around Portsmouth tend to sit with technical leadership, operations teams and regulated product owners rather than general IT alone. Demand comes from industrial, digital, healthcare, energy, defence-adjacent and infrastructure customers that need specialist engineering, defensible IP or research-led product development. Engagements are usually B2B and project-shaped: paid pilots, prototype-to-deployment work, validation studies, embedded hardware trials or software modules that have to pass internal standards before wider roll-out. The buyer base appears more mid-market and enterprise than consumer-facing, with smaller technical teams selling into larger organisations that can absorb longer validation cycles.
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Portsmouth has 65 trading deep tech companies, making this a compact local cohort rather than a broad regional cluster. Reported employment totals 262 people, which points to specialist teams and small engineering groups rather than high-volume local hiring. Commercial maturity is uneven: 1 company reports turnover above £5M, while 11 were incorporated since 2022. That mix fits a market where research-led product work, regulatory readiness and technical validation matter more than short-cycle software sales. For researchers, the area is therefore better read as a concentration of science-led capability around the city than as a large standalone deep tech market.
UK oversight sits around the application rather than the deep-tech label. Policy attention clusters around AI, advanced connectivity, cyber security, engineering biology, quantum technologies and semiconductors. AI systems are being handled through sector-specific supervision, while engineering biology has the Engineering Biology Regulators Network, regulatory sandboxes and the Genetic Technology (Precision Breeding) Act. Cyber security activity sits closer to secure-by-design policy and the Cyber Security and Resilience Bill. Quantum technologies and semiconductors are shaped more by national strategies, public funding and standards work than by a dedicated licensing regime. For Portsmouth firms selling into healthcare, energy, infrastructure or defence-adjacent buyers, procurement evidence and compliance mapping can be as important as the underlying technical claim.
Portsmouth's cohort appears weighted towards early commercial teams, so progress is likely to depend on access to specialist customers, test environments and patient procurement rather than general software demand. Scale-up scarcity may persist where hardware, regulated software or science-led platforms need certification, field trials and technical assurance before repeatable sales emerge. Partnerships with universities, public-sector buyers and engineering supply chains may carry more weight than purely inbound channels. Consolidation also looks plausible where small teams hold useful IP but lack distribution, although many may remain as specialist suppliers rather than becoming broad platform companies.
65
Active firms
2026
11
Since 2022
new incorporations
1
Above £5M
reported turnover
Key facts
About 1% of the trading cohort reports turnover above £5M (1 of 65 firms) — the rest sits below that revenue band.
16% of the cohort was incorporated since 2022 (11 firms), so a sizeable share is in its first few filing cycles.
UK policy identifies six priority frontier technologies: advanced connectivity, AI, cyber security, engineering biology, quantum technologies and semiconductors.
Deep tech has no single UK regulator; oversight is split by technology and use case, from sector-specific AI supervision to the Genetic Technology (Precision Breeding) Act.
Cyber security activity is linked to the Cyber Security and Resilience Bill and secure-by-design policy, while quantum and semiconductor policy is shaped mainly through national strategies, public funding and standards.
UK deep-tech venture investment has slowed from its 2021 peak but still consistently attracts over £5 billion in annual venture capital.
The UK is placed first in Europe and third globally for deep-tech venture capital raised, behind the USA and China.
Top Portsmouth Deep Tech companies
Dynautics Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures control systems for unmanned marine vehicles, including autopilots, remote control, navigation, communication and power management systems for uncrewed surface vessels and…
Serves B2B and public-sector organisations developing or operating uncrewed surface and subsea vehicles, including offshore energy and mining firms, oceanography teams, marine transport operators,…
Financial Health
HealthyHealthy · -4% CAGR over 4y
Location
HSBM PROJECTS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and supplies hardware and software for noise and vibration measurement and analysis, including data acquisition systems, sensors and signal processing tools. Provides testing, rental and…
Sells to engineering, test and R&D teams in automotive, aerospace, defence, energy, rail, manufacturing, power generation and space sectors needing noise and vibration measurement and analysis…
Financial Health
StableStable
Location
BA TECHNOLOGIES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops marine engineering technologies and consultancy services for commercial, work and leisure vessels, including wind‑assisted propulsion systems, hydrofoils, hull optimisation, and control…
Serves B2B maritime customers, including commercial shipowners and operators, tanker fleets, workboat and crew transfer vessel operators, and leisure boat builders.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 2y
Location
Kalvotech Ltd
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsDevelops biomaterials and bioprocess technologies for biotechnology applications. Produces protein‑based biopolymers and edible hollow fibre membranes used in cell cultivation and cultivated meat…
Serves B2B biotech and cultivated meat companies, especially teams developing cell cultivation, bioprocessing and structured meat production, with potential customers in biomedical applications and…
Financial Health
StrongStrong · Hiring · 58% CAGR over 2y
Location
Metaverse VR Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsDevelops virtual, augmented and mixed reality software and simulations for training and operational preparation. Builds immersive 3D environments and modelling systems for sectors including defence,…
Serves defence, aerospace, maritime, land operations and emergency response organisations, including public-sector and private-sector teams needing immersive training and simulation environments.
Financial Health
StrongStrong · Growing, Hiring · 246% CAGR over 2y
Location
SIRIUS DIGITAL SERVICES LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides software engineering services including modelling and simulation, optimisation algorithms, and development of synthetic training environments. Works on robotics and autonomous systems…
Serves UK defence organisations and adjacent technical sectors, including teams working on autonomous systems, synthetic training environments, land and maritime simulation, and offshore wind farm…
Financial Health
StrongStrong · Hiring · 29% CAGR over 1y
Location
TECHNOGRAPH MICROCIRCUITS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
OSIRIS TECHNOLOGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -62% CAGR over 4y
Location
THE MEMBRANE KEYBOARD COMPANY LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -62% CAGR over 5y
Location
NORDIKO TECHNICAL SERVICES LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsDesigns and manufactures thin film deposition and surface modification equipment for research and production applications, including sputtering, ion beam and vacuum processing systems, with wafer…
Serves B2B and academic customers in thin-film R&D, laboratories, pilot production and advanced materials manufacturing, including microelectronics, MEMS, aerospace, automotive, medical devices, data…
Financial Health
HealthyHealthy · -11% CAGR over 2y
Location
Jiva Materials Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies recyclable printed circuit board (PCB) substrate materials. Its Soluboard copper‑clad laminate uses natural fibres and water‑soluble polymers, enabling PCBs to be dissolved to…
Sells to electronics OEMs and PCB fabricators seeking recyclable PCB materials, with partners supplying finished boards to businesses across varied product sectors in the UK and Europe.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 5y
Location
TOUCHNETICS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and develops capacitive touch and force sensing integrated circuits and sensor technologies for user interface applications. Products include aXiom touch controller chips and related…
Sells to OEMs and product manufacturers in automotive, industrial controls, consumer electronics, medical devices, kiosks, marine, transport, heavy machinery, military and aerospace markets.
Financial Health
StableStable
Location
Exail Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops navigation, robotics and autonomous systems for defense, maritime and aerospace applications, including inertial navigation systems, mine countermeasure equipment, unmanned surface and…
Serves public-sector defence organisations, including navies and armies, plus maritime, offshore energy, oil and gas, construction, seabed survey, ocean science and aerospace manufacturers and…
Financial Health
StrongStrong · Growing, Hiring · 13% CAGR over 2y
Location
OCEAN SCIENTIFIC INTERNATIONAL LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and manufactures oceanographic monitoring systems and equipment, including instrumented data buoys, telemetry, marine robotics, sensors, and water column and seabed sampling systems. Also…
Serves B2B and public-sector marine organisations worldwide, including renewables, oil and gas, ports and harbours, defence, meteorology, dredging, calibration laboratories, offshore engineering…
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 2y
Location
SURREY SENSORS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures miniature sensors and measurement systems including pressure scanners, hot‑wire anemometers, thermometers and air data probes. Develops custom sensor packages and prototype…
Serves B2B engineering and R&D teams in motorsport/Formula 1, UAVs and avionics, wind-tunnel and environmental research, healthcare, commercial agriculture and elite sport.
Financial Health
StrongStrong · Hiring · 4% CAGR over 4y
Location
UDlive Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and supplies IoT-based environmental monitoring devices and software for infrastructure networks. Products include battery-powered water level sensors, RTUs, road temperature and bin…
Sells to water utilities, local authorities, highways agencies, civil engineering contractors and infrastructure operators responsible for wastewater networks, flood-prone drainage assets, roads and…
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
ASTECH ELECTRONICS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and supplies rotary telemetry systems for measuring torque, strain, temperature and vibration on rotating or moving components. Provides transmitters, demodulators, pickups and…
Serves B2B engineering, R&D and test teams working with rotating or moving machinery components, including organisations needing torque, strain, temperature or vibration measurement.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
ST CROSS HOMES (LISS) LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDevelops and supplies noise and vibration measurement systems, including data acquisition hardware, sensors and signal analysis software. Provides testing, monitoring and engineering services for…
Sells to B2B engineering and test teams in automotive, aerospace, defence, energy, rail, manufacturing and power generation companies.
Financial Health
DistressedDistressed
Location
ANYTRONICS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -71% CAGR over 4y
Location
Smart Video and Sensing Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides radar-based traffic detection sensors and traffic management systems. Offers consultancy, system design, integration, installation, and maintenance, plus configuration and data visualisation…
Serves B2B and public-sector organisations responsible for transport and security infrastructure, including road authorities, traffic management operators, rail and waterways stakeholders across the…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 4y
Location
Mana Innovation Group Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops automotive electronic control systems and vehicle software, including engine control units, body control modules, instrument clusters and ADAS components. Provides hardware and embedded…
Serves B2B customers, primarily automotive manufacturers and electric vehicle system suppliers needing R&D, validation, production support and consultancy for vehicle electronics and control systems.
Financial Health
StableStable · 0% CAGR over 2y
Location
LAUTERBACH LTD
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDevelops hardware and software debugging and trace tools for embedded systems, including TRACE32 debuggers, trace probes, and analysis software. Supports multicore debugging, code coverage, flash…
Serves B2B embedded-systems developers, engineering teams and technical buyers building software and hardware for semiconductors, automotive, safety-critical and software-defined vehicle…
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
IN DEEP TECHNOLOGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
MYCENA SYSTEMS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
TEKWORKS DESIGN & MANUFACTURING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -16% CAGR over 4y
Location
EDA SOLUTIONS LIMITED
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides electronic design automation (EDA) tools, support, and consulting for semiconductor development, focusing on custom IC, analog and mixed‑signal verification, physical verification, MEMS and…
Serves European semiconductor and electronics businesses, especially start-ups, SMEs and engineering teams designing custom IC, analog/RF mixed-signal, MEMS and photonic IC devices.
Financial Health
HealthyHealthy · -8% CAGR over 5y
Location
C F Electronics Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -12% CAGR over 4y
Location
ACOUSTIC MONITORING INTERNATIONAL LTD
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
YELLOWCOG LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
Wessex Technology Opto-Electronic Products Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -4% CAGR over 4y
Location
Engineering And Data Limited
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
MOTION ROBOTICS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns and develops bespoke collaborative robotic systems and autonomous automation solutions, integrating robotics and artificial intelligence to automate industrial tasks and improve operational…
Targets businesses and industrial organisations across multiple sectors with operations suited to automation, especially teams responsible for productivity, efficiency and process improvement.
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
TRANSPORTISE LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops digital engineering and data analytics solutions for the rail industry. Provides IoT connectivity, remote condition monitoring, asset optimisation, passenger flow analytics, digital twin…
Sells to rail-sector organisations, primarily B2B buyers managing rolling stock, depots, trackside operations and station infrastructure. Targets passenger and freight rail operators, fleet owners,…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
LENA Space Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
GENETIC AND GENOMIC CONSULTING LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong
Location
Avalanche Electronic Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Re-Inventor Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
MACTEK SYSTEMS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
G2 Digital Video Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong · Hiring · 135% CAGR over 3y
Location
ADVANCED MARINE INNOVATION TECHNOLOGY SUBSEA LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -68% CAGR over 4y
Location
NESBITT CLEGG LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
Spectral Dynamics (UK) Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
Everest Design & Consulting Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · Hiring · 19% CAGR over 4y
Location
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How Portsmouth Deep Tech companies work and how to sell to them
What they do
Portsmouth deep tech firms usually monetise specialist IP before they have a fully repeatable product motion. Revenue often comes from feasibility work, paid pilots, engineering services, prototype builds, validation studies, licence fees, support retainers and, for software-led teams, subscription or usage-priced modules. Hardware and materials businesses tend to price around milestones, bill-of-material exposure and integration effort, while AI, cyber and analytics teams can move towards recurring contracts once a model or workflow is embedded. Gross margins vary by how much bespoke engineering sits around the underlying technology, so early revenue can look more like applied R&D than conventional software sales.
Who they sell to
Most sell into mid-market and enterprise accounts where the sponsor can evaluate technical risk and budget for integration. Common buyers are CTOs, heads of engineering, R&D directors, operations leads, product owners in regulated units and procurement teams that sit behind them; finance leaders enter when pilots become wider deployments. Initial contracts are typically framed as pilot or validation budgets, then expand into deployment, licence or support agreements if internal assurance is satisfied. Direct founder-led sales is common at first, with partner introductions, framework buying and RFPs becoming more relevant where healthcare, energy, infrastructure or defence-adjacent customers are involved.
What they buy
Most Portsmouth deep tech firms tend to spend on the unglamorous machinery around technical commercialisation: cloud compute, data management, observability, cyber security, QA, version control, test environments and product documentation. Software-led teams need CRM, billing, customer success tooling and analytics once pilots start converting; hardware, materials and semiconductor-adjacent teams more often need simulation tools, electronic design automation, specialist testing, prototyping facilities and supply-chain support. External services also matter, particularly patent counsel, grant advisory, regulatory mapping, technical recruitment, finance operations and sector-specific marketing that can translate engineering claims into procurement language.
Why and how to sell to them
Procurement urgency tends to appear when a prototype has to become auditable, a pilot customer asks for evidence packs, or a technical hire becomes responsible for repeatable delivery. Other triggers include funding events, grant awards, new regulated-market bids, leadership changes, headcount growth and movement from consultancy-style work to productised revenue. Outbound usually lands better when it reduces validation burden rather than promising generic growth: shorter test cycles, cleaner audit trails, safer data handling, easier integration with enterprise buyers, or clearer unit economics. Messages should acknowledge long qualification cycles and offer a narrow next step, since many teams will not replace core technical systems lightly.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
Also in Portsmouth
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Frequently asked questions
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