Marlow's largest companies are predominantly mid-sized firms in IT services, logistics, and specialized manufacturing. Softcat, with 3,167 employees, provides IT infrastructure solutions. Whistl UK Ltd specializes in eCommerce logistics and delivery management. Thomas develops people science tools for HR, and Chelton offers communication and navigation systems for aerospace and defense. Many of these companies were founded between the 1980s and early 2000s.
The data shows a concentration of companies in technology and professional services. For example, Atech Cloud provides cloud solutions and managed services, while Evolution (Electronic Security Systems) Ltd offers integrated security and fire systems. The presence of organizations like UK Sports Institute and England and Great Britain Hockey indicates a notable sports sector.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Softcatsoftcat.com
A leading provider of IT infrastructure solutions to corporate and public sectors with a dedication to transformative solutions and customer excellence |
3,167 | |||
| 2 |
Whistl UK Ltdwhistl.co.uk
A market-leading group offering efficient eCommerce logistics, delivery management, business mail, parcels, fulfilment, contact center, and door drop media services with exceptional customer service |
1,007 | |||
| 3 | 522 | ||||
| 4 |
UK Sports Instituteuksportsinstitute.co.uk
Provides comprehensive support services to athletes and sports organizations, enhancing performance and enabling excellence in competitive sports. |
411 | |||
| 5 |
TSLtslproducts.com
Specializing in innovative audio monitoring, control systems, and power management solutions for professionals in broadcast, media, aerospace, defense, and live events industries |
385 | |||
| 6 |
Cheltonchelton.com
Specializing in communication and navigation systems for aerospace and defense, offering antennas, anti-jam GPS, and electronic warfare solutions for diverse terrain |
353 | |||
| 7 |
England and Great Britain Hockeyenglandhockey.co.uk
Manages hockey within England from local clubs to top-tier athletes, aiming for increased participation, international success, and improved sport visibility and infrastructure. |
323 | |||
| 8 |
Wimpy Restaurants Group Limitedwimpy.uk.com
A South African quick service restaurant offering a variety of burgers, breakfast items, and coffee to create memorable moments every day |
302 | |||
| 9 |
Jessops Europe Limitedjessops.com
Leading UK photographic retailer offering expert advice, high-quality digital imaging products, printing services, personal gifts, and creative education. |
268 | |||
| 10 |
Evolution (Electronic Security Systems) Ltdevolutionsecurity.com
It specializes in providing integrated security and fire systems, offering professional support and technology solutions to protect assets and staff. |
250 | |||
| 11 |
Atech Cloudatech.cloud
Provides cloud solutions, managed services, and security operations, specializing in Microsoft technologies for businesses of all sizes and industries. |
186 | |||
| 12 |
MLL Telecommlltelecom.com
A company with over 25 years of experience in designing, building, and managing secure networks for the Public Sector and major Mobile Operators, providing network solutions and overlay services |
180 | |||
| 13 |
BWPbwpgroup.com
A diverse team of marketing specialists delivering impactful brand communication strategies focused on growing retail and property businesses through creative and integrated solutions |
162 | |||
| 14 |
The Ralph (Veterinary Referral Centre)theralph.vet
A compassionate veterinary referral centre for dogs and cats in Marlow, offering various specialized services with a strong focus on ethics and patient care |
159 | |||
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. | |||||
| 15 |
Cloud Bridgecloud-bridge.co.uk
A consultancy specializing in guiding companies through their cloud journey, offering migration, design, support, and optimization services while securing funding for clients |
124 | |||
| 16 |
Milwaukee Power Toolsuk.milwaukeetool.eu
Industry-leading manufacturer of heavy-duty, portable electric power tools and accessories for professional users worldwide, with a focus on quality, durability, and innovation |
114 | |||
| 17 |
Milwaukee Tool UKuk.milwaukeetool.eu
A leading solution provider known for disruptive innovation and unrivaled battery technology, offering a wide range of cordless tools, accessories, hand tools, storage solutions, and PPE |
109 | |||
| 18 |
Partner Retail Services (PRS&)prs-and.com
End-to-end retail solution provider owned by entrepreneur Peter Jones CBE, offering innovative in-store technologies and supply chain streamline for enhanced customer experience |
87 | |||
| 19 |
Richterrichter.global
A consulting firm of civil, structural, and geotechnical engineers specializing in temporary works design and providing innovative, sustainable solutions for construction projects |
86 | |||
| 20 |
Twogetherwearetwogether.com
A B2B marketing agency specializing in technology, delivering high-performance campaigns with a global reach and award-winning expertise |
55 | |||
| 21 |
Brandpath X DHLbrandpath.com
Support high-growth ecommerce brands with reliable, affordable logistics solutions, enabling fast delivery and global customer reach across various industries. |
52 | |||
| 22 |
Dun & Bradstreet UKdnb.co.uk
Data and insights provider helping businesses improve performance, accelerate revenue, manage risk, lower cost, and transform through market-leading solutions |
34 | |||
| 23 |
DriveElectricdrive-electric.co.uk
Provides leased Electric Vehicles and finance options for all 100% electric models in the UK, helping businesses and drivers achieve net zero. |
21 | |||
| 24 |
Trusted Coach Directorytrustedcoachdirectory.com
The company verifies and lists qualified coaches to help clients make informed choices, promote professional coaching, and raise industry standards |
10 | |||
| 25 |
The First Elementthefirstelement.com
Innovating green hydrogen production, utilization, and storage methods to drive the transition towards a more sustainable energy future |
7 | |||
| 26 |
Blackrock Pharmaceuticals Limitedblackrockpharma.com
Specialist generic pharmaceutical company developing high-quality medicines, with expertise in regulatory licensing, product development, and commercial partnerships for increased market presence and revenue |
3 | |||
| 27 |
Touchstone International Ltdtouchstone-intl.com
Specialist consulting services driving profitability, efficiency, and shareholder value through strategic support, business transformation, KPI frameworks, and operational efficiency in various industries |
2 | |||
| 28 |
fleosfleos.co.uk
Design and manufacture of innovative 3-in-1 transformable fleece jackets combining outerwear and loungewear, produced in the UK. |
1 | |||
| 29 |
CoopersTradingCompanycooperstradingcompany.com
Specialty coffee and snack provider offering creative workspaces, great food, on-site roasted coffee, and friendly service for meetings and gatherings |
1 | |||
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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.
The same list elsewhere in United Kingdom
- The largest companies in the United Kingdom 36,548
- The largest companies in England 32,641
- The largest companies in Scotland 1,588
- The largest companies in Wales 570
- The largest companies in Northern Ireland 354
- The largest companies in London 12,882
- The largest companies in Manchester 893
- The largest companies in Birmingham 503
- The largest companies in Leeds 478
- The largest companies in Edinburgh 454
- The largest companies in Glasgow 414
- The largest companies in Cambridge 271
- The largest companies in Nottingham 258
- The largest companies in Liverpool 254
- The largest companies in Bristol 251
- The largest companies in Newcastle upon Tyne 226
- The largest companies in Milton Keynes 219
- The largest companies in Sheffield 215
- The largest companies in Leicester 213
- The largest companies in Oxford 198
- The largest companies in Reading 196
- The largest companies in Cardiff 182
- The largest companies in Coventry 166
- The largest companies in Belfast 163