# The 30 largest multinational companies in Bristol
Tamtam tracks 41 multinational companies headquartered in Bristol. This list ranks the 30 largest by number of employees on LinkedIn, led by Imperial Brands PLC, Zellis and Amdaris. Their median headcount is 341. Half of them were founded in 2000 or later.
The multinational companies based in Bristol are primarily established firms, with a strong presence in software development, financial services, and specialized manufacturing. Imperial Brands PLC, for example, is a global FMCG business focused on tobacco harm reduction. Zellis provides payroll and HR services for large companies, while Computershare UK offers transfer agency and financial services globally. Graphcore specializes in AI technology with unique processors.
Many of these companies, such as Inspiring Vet Care and Independent Vetcare, are also prominent in veterinary services. There is a notable cluster of companies founded in the 21st century, indicating recent growth in sectors like software and AI. The listed companies range from large enterprises like Imperial Brands to mid-sized firms, reflecting a diverse business landscape within the city.
π¬π§ Bristol Β· 30 companies Β· Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Imperial Brands PLC](https://www.tamtam.ai/c/imperial-brands-plc) (imperialbrandsplc.com)
An innovative global FMCG business with inclusive culture, focused on tobacco harm reduction, sustainability, and strong international brands | Manufacturing | π¬π§ Bristol | 29,000 | |
| 2 | [Zellis](https://www.tamtam.ai/c/zellis) (zellis.com)
A leading provider of payroll, HR, and managed services in the UK and Ireland for large companies, serving millions of employees annually | Software Development | π¬π§ Bristol | 1,534 | 1963 |
| 3 | [Amdaris](https://www.tamtam.ai/c/amdaris) (amdaris.com)
Providing innovative software development, product design, digital transformation, application support, and consultancy services from UK and Eastern Europe. | Software Development | π¬π§ Bristol | 958 | 2009 |
| 4 | [Computershare UK](https://www.tamtam.ai/c/computershare-uk) (computershare.com)
Global leader providing transfer agency, share registration, employee equity plans, mortgage servicing, proxy solicitation, stakeholder communications, and diversified financial services worldwide | Financial Services | π¬π§ Bristol | 838 | |
| 5 | [Graphcore](https://www.tamtam.ai/c/graphcore) (graphcore.ai)
A company specializing in AI technology with a unique processor designed to accelerate machine learning models and drive breakthroughs in general machine intelligence | Semiconductor Manufacturing | π¬π§ Bristol | 697 | 2016 |
| 6 | [IOP Publishing](https://www.tamtam.ai/c/iop-publishing) (ioppublishing.org)
A global publisher working with researchers to produce academic journals, books, and conferences in the physical sciences, supporting open science and access | Book and Periodical Publishing | π¬π§ Bristol | 640 | |
| 7 | [Inspiring Vet Care](https://www.tamtam.ai/c/inspiring-vet-care) (ivcevidensia.co.uk)
A leading veterinary services provider with over 1,300 clinics in 12 European countries, prioritizing clinical independence, international collaboration, and employee development | Veterinary Services | π¬π§ Bristol | 593 | 2011 |
| 8 | [Sanderson](https://www.tamtam.ai/c/sanderson-bristol) (sandersonplc.com)
Global recruitment solutions provider specializing in permanent/contract hires, executive search, RPO/MSP, project teams, and personalized service excellence for clients and candidates worldwide | Staffing and Recruiting | π¬π§ Bristol | 479 | 1975 |
| 9 | [Assystem Technologies UK](https://www.tamtam.ai/c/assystem-technologies-uk) (assystemtechnologies.com)
A global partner offering engineering services, quality, and digital solutions in aerospace, automotive, defense, finance, industry, and transportation sectors | Mechanical Or Industrial Engineering | π¬π§ Bristol | 442 | 1966 |
| 10 | [Clifton College](https://www.tamtam.ai/c/clifton-college) (cliftoncollege.com)
Clifton College provides all-round education, pastoral care, self-discovery, and excellence in a fun, friendly environment that encourages belonging for all | Education Administration Programs | π¬π§ Bristol | 430 | 1862 |
| 11 | [Sanderson Solutions Group](https://www.tamtam.ai/c/sanderson-solutions-group) (sandersonplc.com)
Global recruitment solutions company with 40 years of experience, specializing in tailored recruitment services including individual hires, project teams, executive search, and fully outsourced solutions | Staffing and Recruiting | π¬π§ Bristol | 415 | |
| 12 | [delaware United Kingdom & Ireland](https://www.tamtam.ai/c/delaware-united-kingdom-and-ireland) (delaware.co.uk)
A global consultancy partnering with leading technology providers to deliver digital solutions, guiding clients towards an intelligent future with over 4,000 professionals worldwide | IT Services and IT Consulting | π¬π§ Bristol | 361 | 2003 |
| 13 | [Independent Vetcare](https://www.tamtam.ai/c/independent-vetcare) (ivcevidensia.co.uk)
A group of leading veterinary practices in the UK focus on clinical excellence, putting pet and client needs first while prioritizing independence | Veterinary | π¬π§ Bristol | 352 | 2011 |
| 14 | [AMI](https://www.tamtam.ai/c/ami-bristol) (amiplastics.com)
Provider of market intelligence, data, conferences, and digital content for the global plastics industry to support informed business decisions. | Information Services | π¬π§ Bristol | 350 | 1986 |
| 15 | [Prysm Group](https://www.tamtam.ai/c/prysm-group) (prysmgroup.co.uk)
Organizing B2B trade exhibitions worldwide for over 20 years with a portfolio of 33 shows, catering to niche and global markets | Advertising Services | π¬π§ Bristol | 341 | 2000 |
| 16 | [Immersive](https://www.tamtam.ai/c/immersive) (immersivelabs.com)
Focuses on people-centric cyber resilience, aiming for organizations to be threat-ready and capable of demonstrating this readiness to leadership and stakeholders. | Computer and Network Security | π¬π§ Bristol | 335 | 2017 |
| 17 | [Project People](https://www.tamtam.ai/c/project-people) (projectpeople.com)
Global talent acquisition and management solutions provider, offering recruitment services, RPO, talent technology systems, payroll services, and project-based assignments across various industries | Staffing and Recruiting | π¬π§ Bristol | 298 | |
| 18 | [Rise Technical](https://www.tamtam.ai/c/rise-technical) (risetechnical.co.uk)
Finds, attracts, and places outstanding permanent and contract engineering and technical talent for businesses of all sizes, focusing on motivational and technical matching. | Staffing and Recruiting | π¬π§ Bristol | 279 | 2005 |
| 19 | [Opus Recruitment Solutions](https://www.tamtam.ai/c/opus-recruitment-solutions) (opusrecruitmentsolutions.com)
A dynamic IT and Engineering recruitment consultancy with global operations, known for high-quality solutions and rapid growth in various industry awards | Staffing and Recruiting | π¬π§ Bristol | 233 | 2008 |
| 20 | [Gloster Furniture](https://www.tamtam.ai/c/gloster-furniture) (gloster.com)
Designing and crafting high-quality outdoor furniture inspired by timeless beauty, using the best materials and techniques for enjoyable moments outdoors | Furniture and Home Furnishings Manufacturing | π¬π§ Bristol | 189 | 1981 |
| 21 | [Inside Travel Group \| B Corpβ’](https://www.tamtam.ai/c/inside-travel-group-b-corp) (insidetravelgroup.com)
Specialist tour operator offering unique group tours and tailored travel to Japan and Asia, with unrivalled advice and support from experienced team | Travel Arrangements | π¬π§ Bristol | 169 | 2000 |
| 22 | [Business Show Media](https://www.tamtam.ai/c/business-show-media) (businessshowmedia.co.uk)
An event company supporting SMEs and startups by organizing big business events globally, featuring various co-located shows and offering essential services/products | Events Services | π¬π§ Bristol | 153 | |
| 23 | [Stirling Dynamics](https://www.tamtam.ai/c/stirling-dynamics) (stirling-dynamics.com)
An advanced engineering company providing high-end products and services globally, specializing in aerospace and marine platforms with a focus on customer satisfaction | Aviation and Aerospace Component Manufacturing | π¬π§ Bristol | 147 | 1987 |
| 24 | [ALD Automotive UK](https://www.tamtam.ai/c/ald-automotive-uk) (aldautomotive.co.uk)
Global leader in sustainable mobility solutions with full-service leasing, fleet management, and multi-mobility services for large corporates, SMEs, professionals, and individuals | Financial Services | π¬π§ Bristol | 133 | 1958 |
| 25 | [Nova Systems International](https://www.tamtam.ai/c/nova-systems-international) (novasystems.com)
Global engineering services and technology solutions company, specializing in keeping nations and people safe through defense, essential services, and cybersecurity partnerships worldwide | Engineering Services | π¬π§ Bristol | 105 | 2012 |
| 26 | [McBraida](https://www.tamtam.ai/c/mcbraida) (mcbraida.com)
Precision manufacturer of components for high-quality industries, utilizing turning, milling, EDM, and grinding expertise UK and Poland factories with AS/EN 9100 and NADCAP approvals | Aviation and Aerospace Component Manufacturing | π¬π§ Bristol | 97 | |
| 27 | [StorMagic](https://www.tamtam.ai/c/stormagic) (stormagic.com)
StorMagic provides innovative solutions for edge data storage and security, offering highly available virtual SAN and encryption key management for organizations worldwide | Software Development | π¬π§ Bristol | 83 | 2006 |
| 28 | [Xledger UK](https://www.tamtam.ai/c/xledger-uk) (xledger.com)
A leading provider of cloud-based finance software, helping businesses streamline and automate their finances globally with real-time insights and efficiency gains | Software Development | π¬π§ Bristol | 69 | 2000 |
| 29 | [Cegedim Insurance Solutions (International Division)](https://www.tamtam.ai/c/cegedim-insurance-solutions-international-division) (cegedim-insurance.com)
Cegedim Insurance Solutions provides Saas solutions and services for insurers and brokers in the health and life insurance sector, internationally | IT Services and IT Consulting | π¬π§ Bristol | 63 | 1969 |
| 30 | [Luxury Lodges](https://www.tamtam.ai/c/luxury-lodges) (luxurylodges.com)
Luxury Lodges offers luxury holiday experiences in beautiful locations, providing amazing escapes for couples and families with a knowledgeable and happy team | Hospitality | π¬π§ Bristol | 54 | 2015 |
## 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 Bristol
- [The largest companies in Bristol](https://www.tamtam.ai/l/largest-companies-bristol) (251)
- [Retail chains in Bristol](https://www.tamtam.ai/l/retail-chains-bristol) (27)
- [IT services companies in Bristol](https://www.tamtam.ai/l/it-services-companies-bristol) (25)
- [Professional services firms in Bristol](https://www.tamtam.ai/l/professional-services-firms-bristol) (25)
## 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)
- [Multinational companies in Wales](https://www.tamtam.ai/l/multinational-companies-wales) (69)
- [Multinational companies in London](https://www.tamtam.ai/l/multinational-companies-london) (3,652)
- [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)
- [Multinational companies in Cambridge](https://www.tamtam.ai/l/multinational-companies-cambridge) (67)
- [Multinational companies in Leeds](https://www.tamtam.ai/l/multinational-companies-leeds) (67)
- [Multinational companies in Edinburgh](https://www.tamtam.ai/l/multinational-companies-edinburgh) (55)
- [Multinational companies in Milton Keynes](https://www.tamtam.ai/l/multinational-companies-milton-keynes) (53)
- [Multinational companies in Reading](https://www.tamtam.ai/l/multinational-companies-reading) (42)
- [Multinational companies in Aberdeen](https://www.tamtam.ai/l/multinational-companies-aberdeen) (39)
- [Multinational companies in Oxford](https://www.tamtam.ai/l/multinational-companies-oxford) (37)
- [Multinational companies in Belfast](https://www.tamtam.ai/l/multinational-companies-belfast) (35)
- [Multinational companies in Nottingham](https://www.tamtam.ai/l/multinational-companies-nottingham) (34)
- [Multinational companies in Coventry](https://www.tamtam.ai/l/multinational-companies-coventry) (30)
- [Multinational companies in Leicester](https://www.tamtam.ai/l/multinational-companies-leicester) (29)
- [Multinational companies in Newcastle upon Tyne](https://www.tamtam.ai/l/multinational-companies-newcastle-upon-tyne) (27)
- [Multinational companies in Watford](https://www.tamtam.ai/l/multinational-companies-watford) (27)
- [Multinational companies in Liverpool](https://www.tamtam.ai/l/multinational-companies-liverpool) (26)
- [Multinational companies in Sheffield](https://www.tamtam.ai/l/multinational-companies-sheffield) (26)
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Source: https://www.tamtam.ai/l/multinational-companies-bristol