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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Imperial Brands PLCimperialbrandsplc.com
An innovative global FMCG business with inclusive culture, focused on tobacco harm reduction, sustainability, and strong international brands |
29,000 | |||
| 2 |
Zelliszellis.com
A leading provider of payroll, HR, and managed services in the UK and Ireland for large companies, serving millions of employees annually |
1,534 | |||
| 3 |
Amdarisamdaris.com
Providing innovative software development, product design, digital transformation, application support, and consultancy services from UK and Eastern Europe. |
958 | |||
| 4 |
Computershare UKcomputershare.com
Global leader providing transfer agency, share registration, employee equity plans, mortgage servicing, proxy solicitation, stakeholder communications, and diversified financial services worldwide |
838 | |||
| 5 |
Graphcoregraphcore.ai
A company specializing in AI technology with a unique processor designed to accelerate machine learning models and drive breakthroughs in general machine intelligence |
697 | |||
| 6 |
IOP Publishingioppublishing.org
A global publisher working with researchers to produce academic journals, books, and conferences in the physical sciences, supporting open science and access |
640 | |||
| 7 |
Inspiring Vet Careivcevidensia.co.uk
A leading veterinary services provider with over 1,300 clinics in 12 European countries, prioritizing clinical independence, international collaboration, and employee development |
593 | |||
| 8 |
Sandersonsandersonplc.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 |
479 | |||
| 9 |
Assystem Technologies UKassystemtechnologies.com
A global partner offering engineering services, quality, and digital solutions in aerospace, automotive, defense, finance, industry, and transportation sectors |
442 | |||
| 10 |
Clifton Collegecliftoncollege.com
Clifton College provides all-round education, pastoral care, self-discovery, and excellence in a fun, friendly environment that encourages belonging for all |
430 | |||
| 11 |
Sanderson Solutions Groupsandersonplc.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 |
415 | |||
| 12 |
delaware United Kingdom & Irelanddelaware.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 |
361 | |||
| 13 |
Independent Vetcareivcevidensia.co.uk
A group of leading veterinary practices in the UK focus on clinical excellence, putting pet and client needs first while prioritizing independence |
352 | |||
| 14 |
AMIamiplastics.com
Provider of market intelligence, data, conferences, and digital content for the global plastics industry to support informed business decisions. |
350 | |||
| 15 |
Prysm Groupprysmgroup.co.uk
Organizing B2B trade exhibitions worldwide for over 20 years with a portfolio of 33 shows, catering to niche and global markets |
341 | |||
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. | |||||
| 16 |
Immersiveimmersivelabs.com
Focuses on people-centric cyber resilience, aiming for organizations to be threat-ready and capable of demonstrating this readiness to leadership and stakeholders. |
335 | |||
| 17 |
Project Peopleprojectpeople.com
Global talent acquisition and management solutions provider, offering recruitment services, RPO, talent technology systems, payroll services, and project-based assignments across various industries |
298 | |||
| 18 |
Rise Technicalrisetechnical.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. |
279 | |||
| 19 |
Opus Recruitment Solutionsopusrecruitmentsolutions.com
A dynamic IT and Engineering recruitment consultancy with global operations, known for high-quality solutions and rapid growth in various industry awards |
233 | |||
| 20 |
Gloster Furnituregloster.com
Designing and crafting high-quality outdoor furniture inspired by timeless beauty, using the best materials and techniques for enjoyable moments outdoors |
189 | |||
| 21 |
Inside Travel Group | B Corpβ’insidetravelgroup.com
Specialist tour operator offering unique group tours and tailored travel to Japan and Asia, with unrivalled advice and support from experienced team |
169 | |||
| 22 |
Business Show Mediabusinessshowmedia.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 |
153 | |||
| 23 |
Stirling Dynamicsstirling-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 |
147 | |||
| 24 |
ALD Automotive UKaldautomotive.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 |
133 | |||
| 25 |
Nova Systems Internationalnovasystems.com
Global engineering services and technology solutions company, specializing in keeping nations and people safe through defense, essential services, and cybersecurity partnerships worldwide |
105 | |||
| 26 |
McBraidamcbraida.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 |
97 | |||
| 27 |
StorMagicstormagic.com
StorMagic provides innovative solutions for edge data storage and security, offering highly available virtual SAN and encryption key management for organizations worldwide |
83 | |||
| 28 |
Xledger UKxledger.com
A leading provider of cloud-based finance software, helping businesses streamline and automate their finances globally with real-time insights and efficiency gains |
69 | |||
| 29 |
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 |
63 | |||
| 30 |
Luxury Lodgesluxurylodges.com
Luxury Lodges offers luxury holiday experiences in beautiful locations, providing amazing escapes for couples and families with a knowledgeable and happy team |
54 | |||
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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.
More company lists in Bristol
- The largest companies in Bristol 251
- Retail chains in Bristol 27
- IT services companies in Bristol 25
- Professional services firms in Bristol 25
The same list elsewhere in United Kingdom
- Multinational companies in the United Kingdom 7,458
- Multinational companies in Scotland 248
- Multinational companies in Northern Ireland 84
- Multinational companies in Wales 69
- Multinational companies in London 3,652
- Multinational companies in Manchester 163
- Multinational companies in Birmingham 78
- Multinational companies in Glasgow 69
- Multinational companies in Cambridge 67
- Multinational companies in Leeds 67
- Multinational companies in Edinburgh 55
- Multinational companies in Milton Keynes 53
- Multinational companies in Reading 42
- Multinational companies in Aberdeen 39
- Multinational companies in Oxford 37
- Multinational companies in Belfast 35
- Multinational companies in Nottingham 34
- Multinational companies in Coventry 30
- Multinational companies in Leicester 29
- Multinational companies in Newcastle upon Tyne 27
- Multinational companies in Watford 27
- Multinational companies in Liverpool 26
- Multinational companies in Sheffield 26