The contract manufacturers in Wales highlighted here operate across several sectors, with a notable concentration in food and beverage production. This includes companies like Finsbury Food Group, which produces cakes and bakery snacks, Oscar Mayer Group UK, making prepared foods for retailers, and Wholebake Limited, specializing in gluten-free healthy snacks. Other significant players include Randox, an international health diagnostics company, and IQE, a global supplier of advanced semiconductor wafers.
Many of these firms are well-established, with several founded in the 1980s, such as Randox (1982), BBI Solutions (1986), and IQE (1988). While some like Randox and Finsbury Food Group are larger with hundreds of employees, the majority are mid-sized firms. The presence of companies like CatSci Ltd, an innovative drug development partner, and Penn Pharma, a pharmaceutical services company, indicates a significant contribution to the healthcare and pharmaceutical manufacturing sectors.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Randoxrandox.com
An international health diagnostics company offering a range of products including Biochip Array Technology, clinical chemistry analyzers, reagents, software, and biosciences portfolio |
1,100 | |||
| 2 |
Finsbury Food Groupfinsburyfoods.co.uk
production of cakes, bread, bakery snacks for UK supermarkets, restaurants, hotels, pubs, including licensed celebration cakes and specialty breads |
636 | |||
| 3 | 420 | ||||
| 4 |
BBI Solutionsbbisolutions.com
Global experts in immunoassay development & manufacturing, offering an extensive portfolio of diagnostic products to enhance quality of life |
335 | |||
| 5 |
Oscar Mayer Group UKoscarmayer.co.uk
Making and developing retailer label prepared foods for top UK grocery retailers, committed to outstanding quality, value, and service for customers. |
291 | |||
| 6 |
Sony - UK Technology Centresonypencoed.co.uk
Award-winning manufacturer of broadcast equipment and Raspberry Pi, providing UK service and repair, committed to quality, environment, and energy management. |
185 | |||
| 7 |
PharmaGrouppharmagroupholdings.com
The company provides natural products for people and pets, ranging from herbal and health remedies to artisan products for bath, body, and home |
115 | |||
| 8 |
HBI EuroCapshbieurocaps.com
EuroCaps is a contract manufacturer of softgel capsules and nutritional gummies for the supplement market, offering services from concept to finished goods |
114 | |||
| 9 |
Wholebake Limitedwholebake.com
Pioneering manufacturer of gluten free healthy snacks and bars, accredited B-Corporation with strong ethical values, specializing in market insight and product launch management |
109 | |||
| 10 |
CatSci Ltdcatsci.com
Innovative drug development partner offering services from candidate selection to product launch, utilizing critical technologies for safer, greener, and cost-effective therapeutics |
99 | |||
| 11 |
The Welsh Pantrywelshpantry.com
A bakery business in South Wales producing a range of savoury pastries from pies to quiches, with ample capacity for continued growth and development |
83 | |||
| 12 |
Penn Pharma, a PCI companypennpharm.co.uk
A leading pharmaceutical services company offering integrated drug development, clinical trial supply, manufacturing, and packaging services to the global healthcare industry |
77 | |||
| 13 |
The Cake Crewthecakecrew.co.uk
A leading UK cake manufacturer specializing in private label bakery products, including cupcakes, tray bakes, and loaf cakes, with continued growth and community focus |
73 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 14 |
Deeside Cerealsdeesidecereals.co.uk
A North Wales based manufacturer of breakfast cereals and bars, specializing in innovative and delicious products for leading food retailers and private label ranges |
59 | |||
| 15 |
Wild Creations Ltdwild-creations.co.uk
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 |
54 | |||
| 16 |
Hilltop Food Grouplovehilltop.com
A company founded in 2011 specializing in producing natural wholefoods like honey, maple syrup, and beauty products using sustainable practices |
49 | |||
| 17 |
Trojan Grouptrojanelectronics.co.uk
Supports global brands with eCommerce management, circular electronics solutions, and sustainable contract manufacturing to drive responsible growth and reduce waste. |
44 | |||
| 18 |
PRV Engineering Ltdprv-engineering.co.uk
A manufacturing company in South Wales offering precision machining, fabrication, welding, and a range of services for various industries worldwide |
40 | |||
| 19 |
The Lewis Pie Cowilfredspies.com
Specializing in delicious pies, pasties, and savouries made with fresh ingredients Offering fresh or frozen options in bulk or small orders Delivering quality products |
23 | |||
| 20 |
JONARVE LIMITEDjonarve.co.uk
Specializing in contract packing and filling solutions for personal care and home care products, including alcohol-based items, talcum powder, and cream filling |
22 | |||
| 21 |
Prima Foods UK Ltdprimafoods.co.uk
A South Wales-based manufacturer of bakery mixes, home baking products, and meal components with a focus on innovation, sustainability, and gluten-free products |
13 | |||
| 22 |
Richards and Appleby Ltdrichardsandappleby.co.uk
A UK-based manufacturer of cosmetics and toiletries, offering a full range of beauty and personal care products with global distribution through various channels |
13 | |||
| 23 |
Corilla Plastics Group Ltdcorillaplastics.co.uk
A UK based rotational plastics company with 40 years of experience, offering custom plastic products with strict quality control and exceptional customer service |
11 | |||
| 24 |
Formagrind Ltdformagrind.co.uk
A manufacturing company with over 30 years of experience specializing in high-precision components, offering modern equipment, tight tolerances, and ISO9001 quality management |
11 | |||
| 25 |
UK CNC Components Ltduk-cnc-components.com
This company offers precision engineering solutions to various industries, using techniques like fibre lasers, CNC machining, 3D printing, and manual machines Email sales@uk-cnc-componentscom for inquiries |
3 | |||
| 26 |
BPM ENGINEERING LTDglts.co.uk
A precision engineering manufacturer offering toolmaking, mould making, fabrication, and CNC machining services, ensuring high-quality solutions for various industries and clients |
3 | |||
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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.
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- Manufacturers in Wales 74
- Multinational companies in Wales 69
- Retail chains in Wales 50
- Companies with in-house R&D in Wales 38
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- Financial services firms in Wales 35
- Financial Services companies in Wales 35
- Hardware manufacturers in Wales 32
- Food and Beverage Manufacturing companies in Wales 29
- SaaS companies in Wales 29
- Retail companies in Wales 28
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- Food and beverage companies in Wales 26
- Hotel and hospitality groups in Wales 26