# List of multinational companies in Wales

Tamtam tracks 69 multinational companies headquartered in Wales. This list ranks the 50 largest by number of employees on LinkedIn, led by Admiral Group Plc, Swansea University / Prifysgol Abertawe and Admiral Group - MBA Leadership Programs. Their median headcount is 194. Half of them were founded in 1989 or later. The most common headquarters are Cardiff (16), Bridgend (3) and Swansea (2).

These multinational companies in Wales operate across diverse sectors, including financial services, higher education, and specialized manufacturing. The list features a mix of well-established institutions like Swansea University, founded in 1920, and major employers such as Admiral Group Plc, a car insurance provider with over 11,000 employees. Other significant firms include Tata Steel UK, producing high-quality steel products, and phs Group, a provider of hygiene services.

A notable pattern among these companies is the concentration of headquarters in major Welsh cities. Cardiff hosts several large employers, including Admiral Group Plc and Cardiff Metropolitan University, alongside specialized firms like IQE in semiconductor manufacturing. Caerphilly is home to phs Group and DHG, a medical device company. This distribution highlights key economic hubs within Wales.

🇬🇧 Wales · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Admiral Group Plc](https://www.tamtam.ai/c/admiral-group-plc) (admiralgroup.co.uk)<br>Leading car insurance provider in the UK and 7 other countries, focusing on innovation, customer service, and employee satisfaction. | Financial Services | 🇬🇧 Cardiff | 11,047 | 1993 |
| 2 | [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 |
| 3 | [Admiral Group - MBA Leadership Programs](https://www.tamtam.ai/c/admiral-group-mba-leadership-programs) (admiraljobs.co.uk)<br>A company seeking future leaders who can make a difference, inspire teams, and grow into great leaders within a personalized and impactful environment | Financial Services | 🇬🇧 Cardiff | 3,515 | 1991 |
| 4 | [Cardiff Metropolitan University](https://www.tamtam.ai/c/cardiff-metropolitan-university) (cardiffmet.ac.uk)<br>Higher education institution focusing on teaching, research, innovation, and community engagement both locally and internationally. | Higher Education | 🇬🇧 Cardiff | 2,789 | 1865 |
| 5 | [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 |
| 6 | [phs Group](https://www.tamtam.ai/c/phs-group) (phs.co.uk)<br>providing washroom, healthcare, floorcare hygiene services and specialist solutions to over 120,000 customers across multiple locations | Facilities Services | 🇬🇧 Caerphilly | 1,481 | 1963 |
| 7 | [Tata Steel UK](https://www.tamtam.ai/c/tata-steel-uk) (tatasteeluk.com)<br>This company produces high quality steel products for various industries, prioritizing innovation, sustainability, and community engagement in all aspects of their operations | Mining | 🇬🇧 Port Talbot | 1,375 |  |
| 8 | [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 |
| 9 | [Nidec Drives](https://www.tamtam.ai/c/nidec-drives) (nidec.com)<br>Manufacturing and supplying precision electric drive solutions worldwide to enhance performance, efficiency, and productivity across various industries. | Automation Machinery Manufacturing | 🇬🇧 Newtown | 737 | 1973 |
| 10 | [HB Leisure Ltd.](https://www.tamtam.ai/c/hb-leisure-ltd) (hbleisure.com)<br>A global leader in skill games and family entertainment, operating in 25 countries with partnerships in theme parks and leisure sectors | Amusement Parks and Arcades | 🇬🇧 Llandudno | 707 | 1927 |
| 11 | [Finsbury Food Group](https://www.tamtam.ai/c/finsbury-food-group) (finsburyfoods.co.uk)<br>production of cakes, bread, bakery snacks for UK supermarkets, restaurants, hotels, pubs, including licensed celebration cakes and specialty breads | Food and Beverage Manufacturing | 🇬🇧 Cardiff | 636 |  |
| 12 | [BGI](https://www.tamtam.ai/c/bgi) (wearebgi.com)<br>Tailored recruitment solutions through partnership-driven outsourced labor services in the UK and Europe Comprised of sector specialists for top expertise | Staffing and Recruiting | 🇬🇧 Cardiff | 422 | 2007 |
| 13 | [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 |
| 14 | [Nidec Control Techniques](https://www.tamtam.ai/c/nidec-control-techniques) (controltechniques.com)<br>Leading provider of variable speed drives & power conversion technology for commercial and industrial applications, enhancing productivity with innovative products for demanding applications | Automation Machinery Manufacturing | 🇬🇧 Newtown | 365 | 1973 |
| 15 | [DHG](https://www.tamtam.ai/c/dhg) (dhg-healthcare.com)<br>Supports health forward movement by delivering innovative solutions for individuals impacted by reduced movement, enhancing outcomes and lowering healthcare costs. | Medical Equipment Manufacturing | 🇬🇧 Caerphilly | 341 | 2009 |
| 16 | [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 |
| 17 | [TXO](https://www.tamtam.ai/c/txo) (txo.com)<br>A company specializing in telecom network hardware, asset management, and critical communication networks, offering cost-effective refurbished equipment with a focus on sustainability | Telecommunications | 🇬🇧 Chepstow | 335 | 2005 |
| 18 | [Alcumus](https://www.tamtam.ai/c/alcumus) (alcumus.com)<br>Providing compliance, risk management, certification, HR, health and safety consultancy, and training solutions to create safer, more efficient workplaces globally. | IT Services and IT Consulting | 🇬🇧 Cardiff | 333 |  |
| 19 | [Simbec-Orion](https://www.tamtam.ai/c/simbec-orion) (simbecorion.com)<br>Responsive and agile full-service CRO specializing in clinical pharmacology, oncology, and rare diseases Tailormade solutions for small to mid-size drug developers | Research Services | 🇬🇧 Merthyr Tydfil | 313 | 1997 |
| 20 | [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 |
| 21 | [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 |
| 22 | [ecube](https://www.tamtam.ai/c/ecube) (ecube.aero)<br>Specializes in aircraft storage, disassembly, and transition services connecting owners and parts companies to maximize asset value. | Airlines and Aviation | 🇬🇧 Barry | 206 | 2011 |
| 23 | [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 |
| 24 | [Nodor International Limited](https://www.tamtam.ai/c/nodor-international-limited) (nodor-darts.com)<br>A global sporting goods company that distributes products worldwide, focused on enhancing athletic performance and enjoyment for customers | Sporting Goods Manufacturing | 🇬🇧 Bridgend | 195 | 1919 |
| 25 | [RMS (Retail Merchandising Services)](https://www.tamtam.ai/c/rms-retail-merchandising-services) (rms.uk.com)<br>A leading merchandising, installation, and retail support company in the UK and Ireland, providing skilled flexible teams to enhance shopping experiences for retail partners | Retail | 🇬🇧 Cardiff | 194 | 2005 |
| 26 | [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 |  |
| 27 | [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 |
| 28 | [Intermarine UK Limited](https://www.tamtam.ai/c/intermarine-uk-limited) (intermarinegroup.com)<br>Global company providing complete peace of mind through technical expertise, meticulous planning, and pragmatic approach to shipping, marine, offshore, and energy projects worldwide | Shipbuilding | 🇬🇧 Pontypridd | 185 | 1990 |
| 29 | [Sony - UK Technology Centre](https://www.tamtam.ai/c/sony-uk-technology-centre) (sonypencoed.co.uk)<br>Award-winning manufacturer of broadcast equipment and Raspberry Pi, providing UK service and repair, committed to quality, environment, and energy management. | Appliances, Electrical, and Electronics Manufacturing | 🇬🇧 Bridgend | 185 | 1992 |
| 30 | [Net World Sports](https://www.tamtam.ai/c/net-world-sports) (networldsports.co.uk)<br>A leading sports equipment supplier with over 15,000 products, serving 30+ sports, shipping to 180+ countries, and partnering with top clubs worldwide | Retail | 🇬🇧 Wrexham | 180 | 2009 |
| 31 | [Sonovate](https://www.tamtam.ai/c/sonovate) (sonovate.com)<br>Financial services and workflow management platform providing funding and payment solutions for recruitment businesses, consultancies, and marketplaces managing global contingent labour forces. | Financial Services | 🇬🇧 London | 153 | 2013 |
| 32 | [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 |
| 33 | [NoteMachine UK Ltd - A Brink's Company](https://www.tamtam.ai/c/notemachine-uk-ltd-a-brink-s-company) (notemachine.com)<br>Financial services business serving 15 million customers monthly through 200 UK branches, cash machines in UK & Europe, and large shopping center presence | Financial Services | 🇬🇧 Crickhowell | 149 | 2006 |
| 34 | [FIS Software](https://www.tamtam.ai/c/fis-software) (sapiens.com)<br>Development and delivery of packaged global insurance solutions managing life insurance, pensions, and investment products through a single platform. | Software Development | 🇬🇧 Cardiff | 120 |  |
| 35 | [OP Chocolate Ltd](https://www.tamtam.ai/c/op-chocolate-ltd) (baronie.com)<br>A company in South Wales with over 75 years of experience baking high-quality wafers and other confectionery products for UK and European markets | Food and Beverage Manufacturing | 🇬🇧 Merthyr Tydfil | 102 | 1963 |
| 36 | [Biocatalysts Ltd](https://www.tamtam.ai/c/biocatalysts-ltd) (biocatalysts.com)<br>A biotechnology company producing specialty enzymes on a commercial scale for various industries, developing bio-based solutions through research, production, and distribution services | Biotechnology Research | 🇬🇧 Cardiff | 102 | 1983 |
| 37 | [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 |
| 38 | [GS Yuasa Battery Europe Ltd](https://www.tamtam.ai/c/gs-yuasa-battery-europe-ltd) (gs-yuasa.eu)<br>A leading supplier of high-quality batteries and energy storage solutions for automotive, industrial, and standby power applications with global distribution and manufacturing capabilities | Appliances, Electrical, and Electronics Manufacturing | 🇬🇧 Ebbw Vale | 95 | 1981 |
| 39 | [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 |
| 40 | [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 |
| 41 | [Veeqo](https://www.tamtam.ai/c/veeqo) (veeqo.com)<br>Free shipping software with automation, low rates, and powerful tools for order fulfillment Offers immediate discounts from major carriers and features like inventory control and reports | Software Development | 🇬🇧 Swansea | 70 | 2013 |
| 42 | [Blackwood Engineering](https://www.tamtam.ai/c/blackwood-engineering) (blackwoodengineering.com)<br>A leading provider of quality castings and counterweights to machinery OEMs globally, offering total supply chain solutions and custom finishing options | Primary Metal Manufacturing | 🇬🇧 Aberbeeg | 66 | 1946 |
| 43 | [Random Software Ltd](https://www.tamtam.ai/c/random-software-ltd) (randomsoftware.net)<br>Software development company based in UK and Sri Lanka specialising in creation and maintenance of B2B web and mobile automotive aftermarket applications. | Software Development | 🇬🇧 Aberystwyth | 63 | 2018 |
| 44 | [Carl Kammerling International Ltd](https://www.tamtam.ai/c/carl-kammerling-international-ltd) (carlkammerling.com)<br>A German company founded in 1904, offering hand tools, power tool accessories, and security products worldwide through own sales teams and distributors | Manufacturing | 🇬🇧 Pwllheli | 59 | 1904 |
| 45 | [NOVOMATIC Gaming UK](https://www.tamtam.ai/c/novomatic-gaming-uk) (novomaticgaming.co.uk)<br>A supplier of premium gaming equipment and signage solutions for the UK leisure industry, with a focus on responsible gaming practices | Gambling Facilities and Casinos | 🇬🇧 Bridgend | 59 |  |
| 46 | [Pockit](https://www.tamtam.ai/c/pockit) (pockit.com)<br>Financial services company dedicated to providing current accounts to underserved individuals in the UK, helping them save money on everyday expenses | Financial Services | 🇬🇧 Cardiff | 54 | 2014 |
| 47 | [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 |
| 48 | [Jane Norman London](https://www.tamtam.ai/c/jane-norman-london) (janenorman.co.uk)<br>A leading UK fashion brand targeting young women with affordable and stylish adaptations of catwalk trends, with a strong retail presence | Retail | 🇬🇧 Cardiff | 51 |  |
| 49 | [Newmor Wallcoverings](https://www.tamtam.ai/c/newmor-wallcoverings) (newmor.com)<br>Specializing in texture, color, and pattern, this company offers a wide range of fabric-backed vinyl wallcoverings, custom printing, and unique recoloring options globally | Design Services | 🇬🇧 Welshpool | 47 | 1967 |
| 50 | [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 |  |

## 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 11, 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)
- [Retail chains in Wales](https://www.tamtam.ai/l/retail-chains-wales) (50)
- [Companies with in-house R&D in Wales](https://www.tamtam.ai/l/r-and-d-companies-wales) (38)
- [Family-owned companies in Wales](https://www.tamtam.ai/l/family-owned-companies-wales) (36)
- [Financial services firms in Wales](https://www.tamtam.ai/l/financial-services-firms-wales) (35)
- [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)
- [Food and Beverage Manufacturing companies in Wales](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-wales) (29)
- [SaaS companies in Wales](https://www.tamtam.ai/l/saas-companies-wales) (29)
- [Retail companies in Wales](https://www.tamtam.ai/l/retail-companies-wales) (28)
- [Public sector organisations in Wales](https://www.tamtam.ai/l/public-sector-organisations-wales) (28)
- [Contract manufacturers in Wales](https://www.tamtam.ai/l/contract-manufacturers-wales) (26)
- [Food and beverage companies in Wales](https://www.tamtam.ai/l/food-and-beverage-companies-wales) (26)
- [Hotel and hospitality groups in Wales](https://www.tamtam.ai/l/hospitality-groups-wales) (26)

## The same list elsewhere in United Kingdom

- [Multinational companies in the United Kingdom](https://www.tamtam.ai/l/multinational-companies-united-kingdom) (7,458)
- [Multinational companies in Scotland](https://www.tamtam.ai/l/multinational-companies-scotland) (248)
- [Multinational companies in Northern Ireland](https://www.tamtam.ai/l/multinational-companies-northern-ireland) (84)
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- [Multinational companies in Manchester](https://www.tamtam.ai/l/multinational-companies-manchester) (163)
- [Multinational companies in Birmingham](https://www.tamtam.ai/l/multinational-companies-birmingham) (78)
- [Multinational companies in Glasgow](https://www.tamtam.ai/l/multinational-companies-glasgow) (69)
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Source: https://www.tamtam.ai/l/multinational-companies-wales