# Top 38 companies with in-house R&D in Wales

Tamtam tracks 38 companies with in-house R&D headquartered in Wales. This list ranks all of them by number of employees on LinkedIn, led by Swansea University / Prifysgol Abertawe, Prifysgol Cymru Y Drindod Dewi Sant / University of Wales Trinity Saint David and Randox. Their median headcount is 86. Half of them were founded in 1989 or later. The most common headquarters are Cardiff (8), Bridgend (2) and Swansea (2).

These Welsh companies are engaged in in-house research and development, predominantly in manufacturing, higher education, and healthcare. Notable examples include Swansea University, a research-led institution with over 5,600 employees, and Prifysgol Cymru Y Drindod Dewi Sant, a dual-sector university. In manufacturing, IQE specializes in semiconductor wafers, while General Dynamics UK Limited focuses on defence solutions. Randox is a significant player in health diagnostics.

The list reveals a concentration of companies involved in advanced technology and specialized manufacturing. Medical equipment and biotechnology are well-represented, with firms like Flexicare Global and BBI Solutions. Several companies, such as Nuaire in clean air technology and Bisley in workplace furniture, demonstrate a long history, having been founded before the turn of the millennium.

🇬🇧 Wales · 38 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Swansea University / Prifysgol Abertawe](https://www.tamtam.ai/c/swansea-university-prifysgol-abertawe) (swansea.ac.uk)<br>Research-led university offering excellent teaching, producing globally recognized research, and contributing to economic growth and community wellbeing. | Higher Education | 🇬🇧 Swansea | 5,646 | 1920 |
| 2 | [Prifysgol Cymru Y Drindod Dewi Sant / University of Wales Trinity Saint David](https://www.tamtam.ai/c/prifysgol-cymru-y-drindod-dewi-sant-university-of-wales-trinity-saint-david) (uwtsd.ac.uk)<br>A prestigious university in Wales, offering a dual-sector approach to education with a focus on benefiting learners, employers, and communities | Higher Education | 🇬🇧 Carmarthen | 1,960 | 1822 |
| 3 | [Randox](https://www.tamtam.ai/c/randox) (randox.com)<br>An international health diagnostics company offering a range of products including Biochip Array Technology, clinical chemistry analyzers, reagents, software, and biosciences portfolio | Hospitals and Health Care | 🇬🇧 Crumlin | 1,100 | 1982 |
| 4 | [Teledyne Qioptiq](https://www.tamtam.ai/c/teledyne-qioptiq) (teledyne-ade.com)<br>Designs and manufactures photonic products and solutions for various industries, including medical, aerospace, and research, with expertise from multiple integrated companies | Defense and Space Manufacturing | 🇬🇧 St Asaph | 660 |  |
| 5 | [IQE](https://www.tamtam.ai/c/iqe) (iqep.com)<br>Global supplier of advanced semiconductor wafers for leading chip manufacturers, offering a range of products and services for high-tech applications worldwide | Semiconductor Manufacturing | 🇬🇧 Cardiff | 420 | 1988 |
| 6 | [General Dynamics UK Limited](https://www.tamtam.ai/c/general-dynamics-uk-limited) (generaldynamics.uk.com)<br>A leading UK defence supplier with expertise in C4I communication solutions, armored fighting vehicles, tactical communications systems, and avionic systems for military aircraft | Defense and Space Manufacturing | 🇬🇧 Blackwood | 417 | 1962 |
| 7 | [BBI Solutions](https://www.tamtam.ai/c/bbi-solutions) (bbisolutions.com)<br>Global experts in immunoassay development & manufacturing, offering an extensive portfolio of diagnostic products to enhance quality of life | Biotechnology Research | 🇬🇧 Crumlin | 335 | 1986 |
| 8 | [Nuaire](https://www.tamtam.ai/c/nuaire) (nuaire.co.uk)<br>A market-leading business specializing in clean air technology, designing and manufacturing efficient fans and ventilation systems since 1966 | Industrial Machinery Manufacturing | 🇬🇧 Caerphilly | 305 | 1966 |
| 9 | [Oscar Mayer Group UK](https://www.tamtam.ai/c/oscar-mayer-group-uk) (oscarmayer.co.uk)<br>Making and developing retailer label prepared foods for top UK grocery retailers, committed to outstanding quality, value, and service for customers. | Food and Beverage Manufacturing | 🇬🇧 Erith and Wrexham | 291 |  |
| 10 | [Orangebox](https://www.tamtam.ai/c/orangebox) (orangebox.com)<br>Specializing in furniture solutions for modern workplaces and hospitality settings, this company delivers global clients research-led designs tailored to their needs | Furniture and Home Furnishings Manufacturing | 🇬🇧 Cardiff | 237 | 2002 |
| 11 | [Flexicare Global](https://www.tamtam.ai/c/flexicare-global) (flexicare.com)<br>A global provider of innovative medical devices with over 40 years of experience, supporting clinicians to enhance patient outcomes worldwide | Medical Equipment Manufacturing | 🇬🇧 Mountain Ash | 222 | 1989 |
| 12 | [Bisley](https://www.tamtam.ai/c/bisley) (thebisleygroup.com)<br>Design and manufacture innovative storage products tailored to meet the evolving needs of modern workplaces with extensive experience. | Furniture and Home Furnishings Manufacturing | 🇬🇧 Newport | 205 | 1931 |
| 13 | [Huntleigh Healthcare](https://www.tamtam.ai/c/huntleigh-healthcare) (huntleigh-diagnostics.com)<br>A leading global provider of innovative medical equipment for healthcare professionals, specializing in vascular care, fetal monitoring, and patient monitoring solutions | Medical Equipment Manufacturing | 🇬🇧 Cardiff | 193 |  |
| 14 | [Siderise Group](https://www.tamtam.ai/c/siderise-group) (siderise.com)<br>A company providing innovative insulation solutions for fire and acoustic applications internationally, with trusted products used in construction, building services, and other industries | Construction | 🇬🇧 Maesteg | 186 | 1972 |
| 15 | [UnitBirwelco](https://www.tamtam.ai/c/unitbirwelco) (unitbirwelco.com)<br>Design, manufacture, and maintenance of thermal equipment including flare systems, fired heaters, and heat exchangers for oil, gas, power, and pharmaceutical industries. | Engineering Services | 🇬🇧 Elba Crescent | 149 | 1892 |
| 16 | [What's Cooking? _UK (Prev. KK Fine Foods Ltd)](https://www.tamtam.ai/c/what-s-cooking-uk-prev-kk-fine-foods-ltd) (kkfinefoods.com)<br>An innovative and sustainable food manufacturer offering high-quality protein and vegetarian meal solutions for both food service and retail sectors | Food and Beverage Manufacturing | 🇬🇧 Desside | 121 | 1987 |
| 17 | [HBI EuroCaps](https://www.tamtam.ai/c/hbi-eurocaps) (hbieurocaps.com)<br>EuroCaps is a contract manufacturer of softgel capsules and nutritional gummies for the supplement market, offering services from concept to finished goods | Wellness and Fitness Services | 🇬🇧 Tredegar | 114 | 1994 |
| 18 | [CatSci Ltd](https://www.tamtam.ai/c/catsci-ltd) (catsci.com)<br>Innovative drug development partner offering services from candidate selection to product launch, utilizing critical technologies for safer, greener, and cost-effective therapeutics | Pharmaceutical Manufacturing | 🇬🇧 Wentloog | 99 | 2010 |
| 19 | [IrvinGQ®](https://www.tamtam.ai/c/irvingq) (irvingq.com)<br>A leading manufacturer providing aerial delivery systems, naval decoy solutions, parachutes, and search & rescue equipment with over 100 years of industry experience | Aviation and Aerospace Component Manufacturing | 🇬🇧 Bridgend | 86 | 1919 |
| 20 | [Penn Pharma, a PCI company](https://www.tamtam.ai/c/penn-pharma-a-pci-company) (pennpharm.co.uk)<br>A leading pharmaceutical services company offering integrated drug development, clinical trial supply, manufacturing, and packaging services to the global healthcare industry | Pharmaceutical Manufacturing | 🇬🇧 Tredegar | 77 | 1979 |
| 21 | [Space Forge](https://www.tamtam.ai/c/space-forge) (spaceforge.com)<br>Global company leading the clean industrial revolution by harnessing space to develop reusable satellites for manufacturing super materials in space | Defense and Space Manufacturing | 🇬🇧 Cardiff | 75 | 2018 |
| 22 | [BCB International Ltd](https://www.tamtam.ai/c/bcb-international-ltd) (bcbin.com)<br>A company developing innovative products to help armed forces, aid workers, and adventurers operate and survive in harsh environments, saving lives through innovation | Defense and Space Manufacturing | 🇬🇧 Cardiff | 62 | 1854 |
| 23 | [Wild Creations Ltd](https://www.tamtam.ai/c/wild-creations-ltd) (wild-creations.co.uk)<br>Specializing in bespoke installations for Theme Parks, TV & Film, and Theatre, the company creates eye-catching displays for major events and clients, ensuring quality at every step | Entertainment Providers | 🇬🇧 Cardiff | 54 | 2010 |
| 24 | [Mypinpad](https://www.tamtam.ai/c/mypinpad) (mypinpad.com)<br>A UK-based B2B SaaS company enabling secure mobile transactions globally, with bank-grade technology, partner collaborations, and focus on financial inclusion | Financial Services | 🇬🇧 Cardiff | 52 | 2012 |
| 25 | [Axium Process Ltd](https://www.tamtam.ai/c/axium-process-ltd) (axiumprocess.com)<br>An engineering house specializing in custom solutions for filtration systems, stainless steel fabrication, and hygienic design across diverse industries | Industrial Machinery Manufacturing | 🇬🇧 Hendy | 50 | 2002 |
| 26 | [Porvair Sciences Ltd](https://www.tamtam.ai/c/porvair-sciences-ltd) (porvairsciences.com)<br>Global manufacturer of consumables, porous plastics, and instruments for life science and analytical labs Providing high quality products for improved analysis and productivity | Biotechnology Research | 🇬🇧 Wrexham | 46 |  |
| 27 | [Zip-Clip Limited](https://www.tamtam.ai/c/zip-clip-limited) (zip-clip.com)<br>Manufacturer of suspension and bracing systems for HVAC, Electrical, Signage, and Seismic needs, offering innovative, high-quality products for safety and ease of use | Construction | 🇬🇧 Welshpool | 38 | 2004 |
| 28 | [VCA Technology](https://www.tamtam.ai/c/vca-technology) (vcatechnology.com)<br>VCA analytics provides data analytics for businesses and organizations to understand people's behavior, enhance security, and reduce false alarms Deployed globally | Software Development | 🇬🇧 Chepstow | 34 | 2007 |
| 29 | [Marine Power Systems Ltd (MPS)](https://www.tamtam.ai/c/marine-power-systems-ltd-mps) (marinepowersystems.co.uk)<br>This company specializes in developing modular floating platforms for industrial scale offshore wind projects, enabling rapid deployment and harnessing ocean power | Renewable Energy Equipment Manufacturing | 🇬🇧 Swansea | 33 | 2008 |
| 30 | [ISCA](https://www.tamtam.ai/c/isca) (iscaguard.com)<br>Manufacturer of preservatives and additives for cosmetics, textiles, coatings, and aerospace industries with ISO accreditation, offering technical support and global distribution | Personal Care Product Manufacturing | 🇬🇧 Wattsville | 27 |  |
| 31 | [Bon Bon Buddies Ltd](https://www.tamtam.ai/c/bon-bon-buddies-ltd) (bonbonbuddies.com)<br>A leading licensed brand novelty confectionery group in Europe, offering a wide range of character and distributor brand confectionery products | Food and Beverage Manufacturing | 🇬🇧 Blackwood | 26 | 1993 |
| 32 | [SmallSpark](https://www.tamtam.ai/c/smallspark) (smallspark.space)<br>Specializing in efficient spacecraft design and payload integration processes to streamline operations and maximize the performance of space missions | Defense and Space Manufacturing | 🇬🇧 Cardiff | 22 | 2020 |
| 33 | [FAUN Trackway Limited](https://www.tamtam.ai/c/faun-trackway-limited) (fauntrackway.co.uk)<br>A company with over 75 years of experience in providing high-quality aluminum engineering solutions, including ground stabilisation trackways for military and civilian markets | Defense and Space Manufacturing | 🇬🇧 Llangefni | 20 | 1942 |
| 34 | [Prima Foods UK Ltd](https://www.tamtam.ai/c/prima-foods-uk-ltd) (primafoods.co.uk)<br>A South Wales-based manufacturer of bakery mixes, home baking products, and meal components with a focus on innovation, sustainability, and gluten-free products | Food and Beverage Manufacturing | 🇬🇧 Dafen | 13 | 1998 |
| 35 | [Thalia Design Automation](https://www.tamtam.ai/c/thalia-design-automation) (thalia-da.com)<br>Venture-funded technology business providing analog/mixed signal design solutions for IC manufacturers and IP companies, with facilities in UK, India, and Germany | Software Development | 🇬🇧 Cwmbran | 13 |  |
| 36 | [Richards and Appleby Ltd](https://www.tamtam.ai/c/richards-and-appleby-ltd) (richardsandappleby.co.uk)<br>A UK-based manufacturer of cosmetics and toiletries, offering a full range of beauty and personal care products with global distribution through various channels | Personal Care Product Manufacturing | 🇬🇧 Tredegar | 13 | 1952 |
| 37 | [Corilla Plastics Group Ltd](https://www.tamtam.ai/c/corilla-plastics-group-ltd) (corillaplastics.co.uk)<br>A UK based rotational plastics company with 40 years of experience, offering custom plastic products with strict quality control and exceptional customer service | Plastics | 🇬🇧 Bridgend | 11 | 2009 |
| 38 | [RAVENOL UK](https://www.tamtam.ai/c/ravenol-uk) (ravenol-direct.uk)<br>Specializing in high-performance lubricants for Motorsport, R&D department creates innovative products exceeding manufacturer requirements, improving engine performance and efficiency worldwide | Motor Vehicle Manufacturing | 🇬🇧 Welshpool | 4 | 2012 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in Wales

- [The largest companies in Wales](https://www.tamtam.ai/l/largest-companies-wales) (570)
- [Manufacturers in Wales](https://www.tamtam.ai/l/manufacturers-wales) (74)
- [Multinational companies in Wales](https://www.tamtam.ai/l/multinational-companies-wales) (69)
- [Retail chains in Wales](https://www.tamtam.ai/l/retail-chains-wales) (50)
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- [Financial Services companies in Wales](https://www.tamtam.ai/l/financial-services-companies-wales) (35)
- [Hardware manufacturers in Wales](https://www.tamtam.ai/l/hardware-companies-wales) (32)
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## The same list elsewhere in United Kingdom

- [Companies with in-house R&D in the United Kingdom](https://www.tamtam.ai/l/r-and-d-companies-united-kingdom) (1,930)
- [Companies with in-house R&D in England](https://www.tamtam.ai/l/r-and-d-companies-england) (1,703)
- [Companies with in-house R&D in Scotland](https://www.tamtam.ai/l/r-and-d-companies-scotland) (94)
- [Companies with in-house R&D in Northern Ireland](https://www.tamtam.ai/l/r-and-d-companies-northern-ireland) (28)
- [Companies with in-house R&D in London](https://www.tamtam.ai/l/r-and-d-companies-london) (477)
- [Companies with in-house R&D in Cambridge](https://www.tamtam.ai/l/r-and-d-companies-cambridge) (56)
- [Companies with in-house R&D in Oxford](https://www.tamtam.ai/l/r-and-d-companies-oxford) (39)
- [Companies with in-house R&D in Manchester](https://www.tamtam.ai/l/r-and-d-companies-manchester) (34)
- [Companies with in-house R&D in Nottingham](https://www.tamtam.ai/l/r-and-d-companies-nottingham) (27)

## The same list elsewhere

- [Companies with in-house R&D in the world](https://www.tamtam.ai/l/r-and-d-companies-in-the-world) (34,346)
- [Companies with in-house R&D in Europe](https://www.tamtam.ai/l/r-and-d-companies-in-europe) (20,169)

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Source: https://www.tamtam.ai/l/r-and-d-companies-wales