Turn this list into pipeline.
Deep Tech Companies in Cardiff: 93 Active Firms (2026)
Deep tech companies in Cardiff commercialise science-led engineering, computing and frontier technology across the city region.
Buying centres in Cardiff tend to sit with CTO, R&D, security, clinical and industrial operations teams, rather than with general IT or back-office buyers. Demand clusters around AI and cyber deployments, advanced computing, hardware and robotics, engineering biology, materials, energy systems and healthcare technology. Customers are mainly business, government, industrial, healthcare and research-led organisations; sales motion often starts with technical validation, funded pilots or collaborative development before moving into product licensing, integration work or regulated procurement. Engagements can be small enough for founder-led delivery but still require specialist assurance, defensible IP and domain-specific evidence before repeat revenue emerges.
Read more
Cardiff has 93 actively trading deep tech companies in this list, a compact city-region cohort. The total reported headcount is 373 people, suggesting many firms remain specialist technical teams rather than large operating companies. Only 3 have turnover above £5M, while 21 were incorporated since 2022; that mix points to an early-commercial base with a thin layer of revenue-scaled businesses. For researchers, the useful comparison is less with broad software and more with science-led company formation, where technical validation, collaborative research and regulated customer pilots tend to shape the route to market.
Oversight is shaped by the technology and use case involved, not by a dedicated deep-tech regulator. AI work follows the UK’s sector-specific governance model; engineering biology may involve the Engineering Biology Regulators Network, regulatory sandboxes and the Genetic Technology (Precision Breeding) Act. Cyber security activity is tied to secure-by-design policy and the Cyber Security and Resilience Bill, while quantum and semiconductor firms are more exposed to national strategies, public funding conditions and technical standards. For Cardiff suppliers selling to government, healthcare or industrial customers, assurance processes may matter as much as formal licensing.
Cardiff’s pipeline appears weighted towards early-commercial technical specialists, with fewer scaled revenue platforms than larger UK clusters. That tends to favour patient procurement, grant-linked development and partnership-led routes into industrial, healthcare and public-sector buyers. Scale-up scarcity may also make consolidation more likely where adjacent hardware, cyber, AI or regulated health technologies need shared compliance, sales and delivery capacity. The constraint is not necessarily idea formation; it is converting defensible technical work into repeatable contracts without losing the research depth that gives these firms their market position.
93
Active firms
2026
3
Above £5M
Turnover threshold
21
Since 2022
New incorporations
Key facts
About 3% of the trading cohort reports turnover above £5M (3 of 93 firms) — the rest sits below that revenue band.
22% of the cohort was incorporated since 2022 (21 firms), so a sizeable share is in its first few filing cycles.
UK government policy names six priority frontier technologies: advanced connectivity, AI, cyber security, engineering biology, quantum technologies and semiconductors.
Oversight tends to follow each technology and use case rather than a single deep-tech rulebook.
The UK deep-tech market still attracts over £5 billion in annual venture capital, despite investment easing from its 2021 peak.
Domestic investor participation falls from 57% at seed stage to under 10% at late stage, leaving later rounds more exposed to overseas capital.
The UK ranks first in Europe and third globally for deep-tech venture capital raised, behind the USA and China.
Top Cardiff Deep Tech companies
Ceryx Medical Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops bioelectronic medical devices that use biomimetic analogue electronics to interpret physiological signals and generate therapeutic responses. Technology includes implantable systems that…
Targets healthcare providers, clinicians and healthcare systems involved in heart failure care, with potential relevance to teams treating hypertension, spinal cord injuries and endocrine disorders…
Financial Health
StrongStrong · Hiring · 33% CAGR over 3y
Location
Afferent Medical Solutions Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops bioelectronic medical devices that use neuromodulation to treat circulatory system diseases. Conducts research and development of non‑invasive, device‑based therapies for conditions such as…
Targets hypertensive patients and people with circulatory system diseases or other therapeutic needs poorly served by existing medication, with relevance to cardiovascular clinicians and healthcare…
Financial Health
DistressedDistressed
Location
Surgical Science
Develops and supplies medical simulation systems and software for training healthcare professionals, including surgical and robotic procedure simulators, curriculum content, and device-specific…
Serves hospitals, medical training centres, surgeons, clinicians and healthcare teams worldwide, as well as MedTech and robotic surgery companies running professional education, sales training and…
Location
SOLARIS BIOLABS LTD
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Maelgwyn Mineral Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and supplies mineral processing technologies and equipment, including Aachen high shear reactors and Imhoflot flotation systems. Provides processes such as the Leachox method and laboratory…
Serves mining and mineral-processing companies, especially operators processing gold-bearing sulphide concentrates and other ores, plus chemical and waste-processing organisations requiring…
Financial Health
StrongStrong · Hiring · 8% CAGR over 2y
Location
PERVADE DEVELOPMENT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops cybersecurity software for security monitoring, dark web intelligence, and compliance management. Products include platforms for vulnerability monitoring, threat intelligence gathering, and…
Serves private- and public-sector organisations needing cybersecurity monitoring, dark web intelligence and compliance oversight, plus channel partners from independent consultants to global managed…
Financial Health
StableStable
Location
Laennec Ai Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable · -13% CAGR over 2y
Location
RESILIENCE HEALTH LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
Brainbox Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsSupplies equipment and integrated systems for neuroscience research, including non‑invasive brain stimulation and brain imaging technologies such as TMS, tES, ultrasound, EEG and fNIRS. Also provides…
Serves neuroscience researchers and research organisations, including university labs, clinical research teams and institutions running non-invasive brain stimulation and brain imaging studies.
Financial Health
StrongStrong · Growing, Hiring · 27% CAGR over 4y
Location
DRONE TECH AEROSPACE LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 5y
Location
NINE KITCHENS & BATHROOMS LTD
Trajectory
1y · 2025–NowDevelops and manufactures MSLA 3D printers, photopolymer resins, and post‑processing equipment for additive manufacturing. Provides workflow automation software and OEM resin production, with custom…
Serves B2B customers including dental labs and clinics, industrial manufacturers, and OEM partners needing scalable additive manufacturing workflows, materials, and production support.
Financial Health
Insufficient historyInsufficient history
Location
SHOTOVER TECHNOLOGIES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures gyro‑stabilized camera gimbal systems and develops augmented reality mapping software for aerial imaging. Products integrate cameras, stabilization and mapping tools used in…
Serves production companies, broadcasters, industrial survey firms, utilities and public-sector agencies in law enforcement, firefighting, search and rescue, defense and homeland security.
Financial Health
StableStable · -16% CAGR over 4y
Location
BINARY SYSTEMS AND ENGINEERING (UK) LTD.
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
Graphite Alchemy Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed
Location
Tundrasystems Global Ltd.
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
Byte Technology Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
THEIA AI LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
H.O.S INNOVATIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Smart Millennium Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong · Hiring · 100% CAGR over 1y
Location
KUBAGEN LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -68% CAGR over 4y
Location
METAEDGE (UK) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
Cumra Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · Hiring · 71% CAGR over 3y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -63% CAGR over 4y
Location
HI-COOLER UK LIMITED
Trajectory
2y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
TEACHING MACHINES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable
Location
CARDIFF CENTRE FOR ASTROBIOLOGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
UK R&D Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
InspiraTek Medical Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
Geode-Energy Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
Develops and manufactures thermal desorption instruments, automated sample preparation systems, and sorptive extraction technologies for gas chromatography–mass spectrometry (GC‑MS). Supplies…
Sells B2B to analytical laboratories, research teams and quality/compliance labs using GC–MS across environmental monitoring, automotive, food and drink, forensics, materials/consumer products,…
Location
Spectrum Technologies Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and manufactures laser wire marking and stripping systems, measure‑and‑cut equipment, and wire handling machinery used in producing wire and cable harnesses. Also provides inkjet wire…
Serves B2B wire and cable harness manufacturers in aviation, defence, medical, space, rail, automotive, telecoms, data and electronics sectors, including global production and engineering teams.
Financial Health
StrongStrong · Growing, Hiring · 29% CAGR over 2y
Location
G24 POWER LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures dye‑sensitised solar cells (DSSC) that convert ambient light into electrical energy. Produces thin, flexible photovoltaic modules using roll‑to‑roll manufacturing for…
Sells to global OEMs and product manufacturers, particularly in portable consumer electronics, wireless sensors and actuators, retail display systems, and other indoor electronic or battery-powered…
Financial Health
WeakWeak · -62% CAGR over 5y
Location
LASER WIRE SOLUTIONS LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDesigns and manufactures laser-based wire processing equipment, including automated wire stripping and spool‑to‑spool systems. Also provides custom laser systems and laser processing for medical…
Sells to B2B manufacturers and engineering teams in medical devices, automotive, aerospace and defense, data centers and electronics that need precision wire processing, automation and component…
Financial Health
StrongStrong · Profitable, Growing · 2% CAGR over 3y
Location
Agile Kinetic Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops AI‑based software for movement analysis using computer vision and sensors on consumer devices. Provides the MoveLab suite to digitise and assess human motion for healthcare, sports…
Serves healthcare, sports and industrial organisations, including companies developing digital health, precision care, performance or remote assessment capabilities.
Financial Health
StableStable · Hiring · 13% CAGR over 4y
Location
IMSPEX DIAGNOSTICS LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies gas chromatography–ion mobility spectrometry (GC‑IMS) instruments and analytical solutions for detecting and characterising volatile compounds. Provides breath analysis…
Serves healthcare researchers, clinicians, healthcare administrators and health centres, plus industrial customers in food and beverage processing, environmental monitoring and wastewater/refining…
Financial Health
StableStable · -70% CAGR over 4y
Location
B2Space Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides high‑altitude flight services including near‑space testing, high altitude pseudo‑satellite (HAPS) platforms, and balloon‑launched rockoon systems used to test technologies and support the…
Serves aerospace companies, satellite operators, research organisations and universities seeking high-altitude testing, HAPS missions or small/micro-satellite access to low Earth orbit, primarily in…
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 5y
Location
Fuel Cell Sensors Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures fuel cell sensors for breath alcohol analysers and transdermal alcohol detection devices. Supplies standard and quad cell sensors, OEM replacement electrodes, and bespoke…
Serves B2B OEMs and instrumentation manufacturers building breath alcohol analysers and transdermal alcohol detection devices, including firms needing bespoke component integration.
Financial Health
WeakWeak · -3% CAGR over 4y
Location
Tasicca Limited
Trajectory
3y · 2023–NowFinancial Health
Insufficient historyInsufficient history
Location
THERMETRIX LTD.
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -44% CAGR over 4y
Location
NEMEIN GROUP LTD.
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures thermal and vibration management equipment and sensing technologies for downhole drilling tools. Provides systems for power generation, imaging and data telemetry in deep…
Serves B2B energy and drilling organisations working in harsh downhole environments, including geothermal borehole developers, drilling contractors and operators managing deep, hot boreholes.
Financial Health
StableStable
Location
Photronics (UK) Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsManufactures photomasks used in semiconductor and flat panel display production. Supplies mask solutions for integrated circuits, memory, logic devices, advanced packaging, LCD and AMOLED displays,…
Serves B2B customers in the semiconductor and flat panel display industries, including IC manufacturers working on logic, memory and advanced packaging, and display makers producing LCD and AMOLED…
Financial Health
StableStable · 2% CAGR over 2y
Location
LASER DIRECT LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
CICOR NEWPORT LTD (FORMERLY TT ELECTRONICS INTEGRATED MANUFACTURING SERVICES LIMITED)
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · -89% CAGR over 2y
Location
Sustainable Materials Development Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
HealthyHealthy
Location
Skystrm Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
Ctronix Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
Location
Auspi UK Limited
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
THE SMART CONTAINER COMPANY LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsDevelops Internet of Things sensors and software for tracking returnable containers used to transport liquids and gases. Provides a platform that monitors location, volume, temperature and motion to…
Serves B2B operators of returnable liquid and gas container fleets, including supply chain, operations, quality and sustainability teams in industries needing end-to-end product movement visibility.
Financial Health
DistressedDistressed · -14% CAGR over 4y
Location
MASTERCONTROL SYSTEMS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
AMMBRO TECHNOLOGIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
Unlock all 93 leads
Showing 50 of 93 — +43 more with verified decision-maker contacts, live data, and CRM sync.
How Cardiff Deep Tech companies work and how to sell to them
What they do
Cardiff deep tech firms usually monetise specialised software, hardware, technical IP and domain services rather than generic business applications. Revenue often begins with paid feasibility work, funded pilots, integration projects or collaborative development, then moves into product licences, maintenance, usage-based access, support retainers or regulated deployment contracts. Pricing is typically staged because customers need evidence before wider rollout: a smaller validation engagement may precede a longer product, platform or infrastructure commitment. Hardware, robotics, materials and healthcare technology businesses may also carry services revenue for installation, testing, certification and customer-specific engineering.
Who they sell to
Buyers are typically business, government, industrial, healthcare and research-led organisations with technical or regulated problems to solve. The first sponsor is often a CTO, R&D lead, security owner, clinical lead or industrial operations team, with procurement, finance and legal becoming more involved once a pilot turns into a contract. Sales cycles tend to run through technical validation rather than simple budget approval, so proof, assurance and integration fit matter early. Most Cardiff suppliers sell directly at first, though partner-led routes, funded programmes and formal procurement become more relevant where customers are public-sector, healthcare or industrial organisations.
What they buy
Most Cardiff deep tech firms tend to spend on specialist inputs that help them prove, protect and deliver technical work. Common categories include cloud and compute infrastructure, secure development tooling, data management, model evaluation, observability, cyber assurance, quality management, laboratory or engineering workflow systems, and analytics. Commercial functions often need CRM, proposal management, billing, grant finance, accounting and customer support tools as projects become repeatable. Services spend can include IP legal advice, regulatory consulting, technical marketing, certification support, recruitment for scarce engineering roles, and fractional finance or operations help while teams remain small.
Why and how to sell to them
Buying tends to open when a prototype moves into a funded pilot, a regulated customer asks for assurance evidence, or a founder-led team needs repeatable delivery after early technical wins. Other triggers include grant-linked milestones, headcount growth, a new commercial hire, entry into healthcare or industrial procurement, or pressure to document security, quality and performance claims. Outbound works better when it maps to the evaluation burden: reducing time spent on evidence packs, improving customer onboarding, protecting IP, shortening integration work, or helping technical teams pass procurement checks. Generic productivity claims are less persuasive than category-specific proof and credible references from adjacent regulated or research-led buyers.
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 Cardiff
Related directories
Frequently asked questions
How many Deep Tech companies are there in Cardiff?
What counts as a Deep Tech company in this list?
Which are the largest Deep Tech companies in Cardiff?
What do Deep Tech companies in Cardiff actually do?
How does Cardiff Deep Tech compare internationally?
How is this list built and how fresh is the data?
How big are the typical Deep Tech companies in Cardiff?
Are these mostly new or established Deep Tech companies?
What SIC codes does this use?
What buying signals should I look for?
Push these 93 companies into your pipeline.
Find the right decision-makers, see verified company data, and export your list in seconds.