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Deep Tech Companies in Swansea: 38 Active Firms (2026)
Deep tech companies develop science- and engineering-led products across AI, hardware, robotics, materials, energy and healthcare in the Swansea area.
Buying centres tend to sit inside R&D, engineering, operations, security, clinical and infrastructure teams rather than general software procurement. Swansea’s deep tech cohort is therefore closer to technical procurement than volume SaaS: buyers are usually industrial groups, public-sector bodies, healthcare organisations, utilities and enterprise technology teams with long validation cycles. Engagements often start as feasibility work, pilots, specialist hardware supply, licensing or joint development, then move into higher-value deployments once performance, safety, standards and integration issues are settled. Relevant firms have defensible technical intellectual property, early commercial traction and customers prepared to buy against technical risk.
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Swansea has 38 actively trading deep tech companies, making this a compact local cohort rather than a broad regional cluster. Reported headcount totals 889, which points to a market with some employer substance but a relatively narrow base of scale. The largest-company lens is revenue-based rather than headcount-based, and the local mix points to limited turnover scale. Much of the list is likely to comprise specialist product teams, applied engineering consultancies and early-commercial ventures. For researchers, the useful reading is concentration: a small number of employers can move the local profile, while newer incorporations add breadth at the experimental end.
Deep tech in the UK is governed by use case rather than a unified rulebook. Oversight follows the application: AI is handled through sector-specific governance, engineering biology through the Engineering Biology Regulators Network, sandboxes and the Genetic Technology (Precision Breeding) Act, and cyber security through secure-by-design policy and the Cyber Security and Resilience Bill. Quantum technologies and semiconductors sit more in national strategy, public funding and standards than in a licensing regime. For Swansea firms selling into healthcare, infrastructure or public-sector buyers, the practical issue is often evidence: test results, safety cases, audit trails and procurement documentation that match the buyer’s risk model.
Commercial progression appears uneven, which is typical for science-led ventures with long validation cycles. Swansea’s cohort looks more likely to deepen around applied engineering, healthcare, cyber security, energy and infrastructure problems than to converge on a uniform product model. Early customers tend to matter as much as capital, because reference sites, standards evidence and procurement access can determine whether technical work becomes repeatable revenue. Some firms may be pulled into larger supply chains or acquisition routes, while others remain specialist teams serving a narrow buyer set. The constraint is less interest in frontier technology than the time and proof needed to sell it into conservative markets.
38
Active firms
2026
11
Newer incorporations
Incorporated since 2022
1
Above £5M
Recorded turnover threshold
Key facts
About 2% of the trading cohort reports turnover above £5M (1 of 38 firms) — the rest sits below that revenue band.
28% 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 oversight is technology- and use-case-specific, with AI handled through a sector-specific model rather than a single licensing regime.
Engineering biology is supported by the Engineering Biology Regulators Network, regulatory sandboxes and the Genetic Technology (Precision Breeding) Act.
UK deep tech venture investment has slowed from its 2021 peak but still consistently attracts over £5 billion in annual venture capital.
Domestic investor participation falls from 57% at seed stage to under 10% at late stage, so later rounds rely more on overseas capital.
Top Swansea Deep Tech companies
IRRESISTIBLE MATERIALS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops photoresist materials for extreme ultraviolet (EUV) lithography used in semiconductor manufacturing. Uses a patented Multi‑Trigger Resist (MTR) chemical platform to improve pattern…
Sells B2B to semiconductor manufacturers and industry partners involved in advanced chip fabrication, particularly EUV lithography and high-volume manufacturing environments needing next-generation…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 2y
Location
MARINE POWER SYSTEMS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and develops floating platform technology for deep-water offshore wind farms. Manufactures modular structures that support offshore wind turbines and enable deployment of large-scale wind…
Serves offshore wind developers, renewable energy companies and infrastructure project partners pursuing industrial-scale deep-water wind projects.
Financial Health
StableStable · -62% CAGR over 4y
Location
ROCKFIELD SOFTWARE LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and supplies Elfen discrete and finite element simulation software used to model geomechanical and engineering processes including mining, geotechnical, civil engineering, forming and…
Serves B2B engineering and technical teams in geotechnical, mining, oil and gas, civil engineering, nuclear waste, carbon storage, packaging, glass forming and industrial forming sectors.
Financial Health
WeakWeak · -6% CAGR over 2y
Location
GROVE NANOMATERIALS LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsDevelops and manufactures colloidal gold nanoparticles for use in diagnostic assays. Uses automated physics‑based fabrication to produce multi‑colour nanoparticles for lateral flow tests, enabling…
Targets investors, grant funders and B2B partners in medical diagnostics, especially lateral flow and point-of-care testing developers, with future consumer channels for home allergy testing.
Financial Health
WeakWeak · 34% CAGR over 2y
Location
THREE CLIFFS GEOMECHANICAL ANALYSIS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops geomechanical and geological modelling software, including the ParaGeo thermo‑hydro‑mechanical finite element simulation platform. Provides research, modelling and consultancy services for…
Targets industrial R&D and subsurface engineering teams in geothermal, reservoir and geological sectors, as well as university research groups working on geomechanics and thermo-hydro-mechanical…
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
Location
PLANT ECOLOGY BEYOND LAND (PEBL) CIC
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsDevelops and supplies marine monitoring tools including sensor and imaging systems for offshore and coastal environments. Rents and sells equipment and provides monitoring and biodiversity survey…
Serves organisations in offshore renewables, marine conservation and management, and marine aquaculture, including seaweed and shellfish farm operators from pre-licensing through operational sea…
Financial Health
HealthyHealthy · Hiring · 32% CAGR over 4y
Location
MEER LABS LTD
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsDevelops AI computing hardware including acceleration cards and servers, and provides AI software optimisation, model fine‑tuning and deployment services. Builds computing frameworks and…
Serves enterprises, research institutions and developers building AI applications, including organisations working with large language models, RAG, AI agents and blockchain-enabled AI systems across…
Financial Health
StableStable · Hiring · 75% CAGR over 1y
Location
RIVERSIMPLE HOLDING LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsDevelops hydrogen fuel‑cell electric vehicles and related technology focused on lightweight zero‑emission cars. Plans to provide vehicles through an all‑inclusive subscription service covering use,…
Targets environmentally conscious drivers seeking subscription-based mobility, plus fleet and commercial operators needing zero-emission vehicles with low downtime. Also addresses investors…
Financial Health
WeakWeak · -11% CAGR over 1y
Location
LEADING MAGNETIC DESIGN LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -58% CAGR over 5y
Location
GLS Wales Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed
Location
BROADREACH INTEGRITY LTD
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Stainlessclad Uk Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
MEDICAL CONNECTIONS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops software development kits for handling medical imaging standards, including DICOM and IHE XDS, used in healthcare systems. Provides integration libraries for .NET and other platforms, along…
Serves healthcare software vendors, medical imaging developers, PACS/DICOM integrators and healthcare IT teams, including companies building clinical data, imaging and medical machine-learning…
Financial Health
WeakWeak · -89% CAGR over 2y
Location
Small Biotechnologies Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
C. & P. CONTROL PANEL SERVICES LTD
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
C & P HIGH VOLTAGE SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -36% CAGR over 4y
Location
INTERNATIONAL CENTRE FOR MANUFACTURE BY PRINTING LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
BLUE SKY LASER TECHNOLOGIES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures and supplies replacement Smartridges for Regenlite/NLite laser machines used in dermatology and aesthetic treatments. Provides servicing, maintenance and repair of Regenlite/NLite lasers…
Serves businesses and professionals that own or operate Regenlite/NLite laser machines and Chromolite/Phaser IPL systems, particularly customers needing compatible parts and technical support.
Financial Health
StableStable · -4% CAGR over 5y
Location
CHOCOLATE BIKES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Cellular Agriculture Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops hollow fibre bioreactor technology for cell cultivation and biomanufacturing. Conducts research and engineering to create scalable bioreactors for producing cultivated food, pharmaceuticals,…
Serves B2B partners in cultivated food, pharmaceuticals, cosmetics, aerospace and animal health, including food producers, biotech firms, life sciences companies and industrial biomanufacturing…
Financial Health
HealthyHealthy · Hiring · 70% CAGR over 4y
Location
THE MAGSTIM COMPANY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops, manufactures and sells neurostimulation and neurodiagnostic medical devices, including transcranial magnetic stimulation (TMS), EEG and transcranial direct current stimulation systems, for…
Serves neuroscience researchers, clinicians and TMS/EEG providers in research and clinical healthcare settings, including hospitals, clinics and neuromodulation practices treating brain-related…
Financial Health
HealthyHealthy · -1% CAGR over 4y
Location
Capabilities Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cybersecurity research and consultancy focused on hardware and software security. Works on CHERI architecture, secure operating systems, toolchains and cryptographic infrastructure,…
Serves industrial, defence and government organisations running security-critical hardware and software programmes, particularly teams working in CHERI and secure computing R&D.
Financial Health
HealthyHealthy
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops medical monitoring technology for intravenous therapy, including sensor‑based systems that continuously monitor peripheral IV cannula sites and alert clinical staff to complications in real…
Serves healthcare providers and clinical teams using peripheral IV cannulas, particularly hospitals, nurses and patient-safety stakeholders responsible for IV therapy monitoring in busy clinical…
Financial Health
DistressedDistressed
Location
MIMIC TECHNOLOGIES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops surgical simulation software and training platforms for robotic and minimally invasive procedures. Provides virtual and augmented reality training modules, performance analytics, and scoring…
Serves hospitals, surgical training programmes, robotic surgery teams and medical device partners using da Vinci surgical systems, including surgeon educators and healthcare organisations.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
Retro Solutions Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
SOFTWARE SYSTEMS DEVELOPMENTS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -62% CAGR over 4y
Location
Corryn Biotechnologies Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 47% CAGR over 4y
Location
DEER TECHNOLOGY LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
WeakWeak · -83% CAGR over 3y
Location
ENG AUTOMATION AND CONTROLS LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
Lexor Technologies Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
Location
Clearhand Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
LN8 SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
POWER FAB DESIGNS LTD
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
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How Swansea Deep Tech companies work and how to sell to them
What they do
Revenue usually comes from a mixed model rather than a single subscription line: paid R&D work, prototype development, deployment projects, licence fees, hardware margins, maintenance and specialist support. Swansea deep tech firms often sell technical capability first, then try to convert repeatable parts of the work into a product, platform or licensable component. Pricing tends to follow the risk profile of the engagement. Early work may be milestone-based or time-and-materials; later contracts can include per-unit hardware pricing, annual licences, support retainers or usage-based elements where software, data or infrastructure is involved.
Who they sell to
Most buyers are technical and risk-aware: R&D directors, engineering heads, CTOs, security leaders, clinical innovation teams, infrastructure managers and operations directors. Finance and procurement usually enter once a pilot becomes a deployment, especially in public-sector, healthcare and infrastructure settings. Sales cycles tend to be measured in months rather than weeks because customers need validation evidence, integration planning, security review and budget approval. Smaller private-sector buyers may buy directly from founders or technical sales teams, while larger organisations often use formal procurement, partner channels, trials, framework-style routes or joint development agreements.
What they buy
Most Swansea deep tech firms tend to spend on tools and services that help them turn technical work into repeatable delivery. Common needs include cloud infrastructure, data engineering, observability, cyber security, device testing, simulation, quality management, documentation, CRM, billing, finance systems and project management. Hardware-led teams may also need prototyping support, specialist manufacturing services, component sourcing, certification advice and facilities. Founder-led and early commercial teams often buy outsourced legal, accounting, IP, grant-writing, marketing and recruitment support before they hire those functions internally. Technical credibility matters in supplier selection, so generic horizontal pitches usually need adapting to the buyer’s field.
Why and how to sell to them
Buying interest tends to appear when a firm moves from prototype to customer trial, from trial to deployment, or from founder-led delivery to a repeatable commercial process. Other triggers include public funding, a senior technical or commercial hire, new healthcare or infrastructure customers, security review, standards work, headcount growth or pressure to document evidence for procurement. Outbound messages usually land better when they address validation cost, audit trails, integration risk, delivery bottlenecks or customer proof, rather than broad growth claims. Sellers should expect technical scrutiny and bring relevant use cases, clear implementation effort and a credible route through procurement.
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 Swansea
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Frequently asked questions
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