| # | Company | Employees |
|---|---|---|
| 1 |
Edutechartbees.co.uk
A London-based company is an official Google for Education Partner, offering implementation, configuration, training, and support for Chromebooks and G Suite |
24,990 |
| 2 | 15,616 | |
| 3 |
Pharma Solutions Hubmarketinglo.com
Specialized pharmaceutical marketing agency helping companies increase visibility, engagement, and leads through media planning, buying, strategy, PPC, creative, web design, content, and inbound marketing services |
15,120 |
| 4 |
Deliveroodeliveroo.co.uk
A global food delivery service working with thousands of restaurants and riders to offer top-notch delivery experiences in multiple countries |
10,910 |
| 5 |
Game Developerguden.org
Global community for game creation enthusiasts, from novices to experts, fostering learning, idea exchange, and mutual support in game development. |
9,799 |
| 6 | 7,630 | |
| 7 |
The Access Grouptheaccessgroup.com
It provides business management software solutions for small and mid-sized organizations, enhancing productivity through innovative cloud and AI technologies. |
7,368 |
| 8 |
Toptaltoptal.com
A network connecting top talent in business, design, and technology to help companies scale teams on demand with impressive growth |
6,417 |
| 9 |
Travel AIgudens.com
A leading travel & tourism marketing firm offering digital expertise, PR, content creation, design, data analysis, and brand strategy for various clients in the industry |
6,279 |
| 10 |
FinTech Foundryfinancemarketing.org
The company specializes in making finance more approachable through business consultation, brand strategy, and digital marketing services for financial services companies |
5,914 |
| 11 |
Ocado Groupocadogroup.com
Global technology company specializing in online grocery and logistics platforms, enabling partners to excel in ecommerce fulfillment and automation across various industries. |
5,698 |
| 12 |
IONiongroup.com
Innovative company providing trading and workflow automation software to financial institutions, corporations, and governments, empowering decision-making and accelerating processes |
5,591 |
| 13 |
Sophossophos.com
A global cybersecurity leader offering advanced solutions, managed services, and a broad portfolio of technologies to protect organizations from cyberattacks worldwide |
5,498 |
| 14 |
Shopify Developeronder.co.uk
A cloud-based e-commerce platform offering easy setup for online stores and expert development services to enhance advanced features and customer experiences |
5,461 |
| 15 |
Sapienssapiens.com
Global leader providing intelligent software solutions for insurers, empowering them with AI and automation across property, casualty, and life insurance operations. |
5,271 |
| 16 | 4,473 | |
| 17 |
Simulation AImarketizon.com
Aviation Marketing is a specialized agency offering strategic marketing solutions to help aviation companies achieve their business goals through digital marketing strategies |
4,007 |
| 18 |
CIBER
A Computer Software company based in the United Kingdom, providing innovative solutions and services from their location in Watling Close, Burbage, LEICS |
3,742 |
| 19 |
Playtechplaytech.com
Leading software and services supplier for the gambling industry, offering omni-channel solutions for online, mobile, and retail operations, including financial trading. |
3,735 |
| 20 |
Trip AImsdevs.org
This company specializes in creating unique and innovative website designs for travel operators and agencies to help them stand out and attract customers |
3,538 |
| 21 |
Healthcare AIthehealthmarketing.com
A next-generation healthcare marketing agency that crafts strategies based on market analytics to attract the right patients and grow client's medical practices |
3,377 |
| 22 |
Civicacivica.com
The company creates software solutions for delivering essential services to people globally |
3,116 |
| 23 |
Medical Practicemsdevs.org
Developing AI-powered solutions for medication management and patient care, improving adherence, reducing errors, providing personalized insights, and increasing healthcare efficiency |
3,092 |
| 24 |
Genius Sportsgeniussports.com
This company delivers technology and expertise to sports, betting, and media partners worldwide, enhancing data collection, fan engagement, and overall performance |
3,054 |
| 25 |
IRIS Software Groupiris.co.uk
Leading provider of integrated software solutions and services to help organizations make better business decisions, minimize admin, and improve efficiency across various industries. |
3,041 |
| 26 |
Ocado Technologycareers.ocadogroup.com
Revolutionizing online retail with cutting-edge technology in robotics, IoT, cloud platforms, big data, and machine learning to create world-class systems |
2,894 |
| 27 |
Support AImedia7.net
An ethical London-based SEO Agency offering sustainable organic SEO services, including content creation, link building, and transparent processes for guaranteed results |
2,858 |
| 28 |
Quantum Security Agencyorg.uk
Specialized restaurant marketing agency offering solutions to help restaurants thrive through social media management, content marketing, websites, and other marketing services |
2,842 |
| 29 |
David Gudendevelopers.google.com
It is a human capital solutions company that has rebranded to Quess Staffing |
2,712 |
| 30 | 2,661 | |
| 31 |
PHP Developermsdevs.org
A global network promoting PHP technologies, supporting the PHP community through events, mentorship, and advocating for diversity and inclusion |
2,550 |
| 32 |
Keyloopkeyloop.com
Global automotive technology company delivering cutting-edge solutions for auto retailers and OEMs, connecting them to consumers through innovative technology and distinctive customer experiences |
2,435 |
| 33 |
Women Developerguden.org
The company provides a platform for women to learn technical and professional skills, connect with others, and explore tech careers |
2,182 |
| 34 |
OneAdvancedoneadvanced.com
Provider of sector-focused business software and services supporting millions of users across healthcare, education, legal, and public sectors in the UK. |
2,179 |
| 35 |
J.D. Edwardsagency.org.uk
This company provides software solutions for business management, specializing in enterprise resource planning (ERP) systems for various industries |
2,028 |
| 36 |
Canonicalcanonical.com
Publishing Ubuntu, popular enterprise Linux, open source delivery, cloud to edge, secure, cost-effective, global community, developer platform, remote-first company. |
2,001 |
| 37 |
Image AIthehealthmarketing.com
Revolutionizing image interaction with AI solutions for accessibility, usability, and enjoyment Offering image classification, generation, search, analysis services for various industries |
1,950 |
| 38 |
Angular Developerfinancemarketing.org
This company released Angular in 2016, a rewrite of AngularJS, for improved mobile development, modularity, and dependency injection in web applications |
1,870 |
| 39 |
Autotradercareers.autotrader.co.uk
Leading UK automotive marketplace connecting buyers and sellers of cars, e-bikes, caravans, simplifying complex vehicle purchasing journeys. |
1,706 |
| 40 |
Entertainment AIorg.uk
The company specializes in entertainment marketing, creating authentic connections, engaging storytelling, and strategic partnerships with influencers, celebrities, and opinion leaders |
1,693 |
| 41 |
MedTech AIguden.org
Expert in creating customized Android and iOS apps that meet your business needs, delivering quality solutions at competitive prices |
1,684 |
| 42 |
SMIagency.org.uk
Media consultancy firm specializing in social media, online PR, traditional PR, content management, and copywriting for small businesses to optimize their communication strategy |
1,662 |
| 43 |
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 |
| 44 |
Canadaharmonyfitness.ca
It provides professional consulting services, focusing on business solutions, strategy development, and operational improvements for various industries and clients. |
1,510 |
| 45 |
Dotsquaresdotsquares.com
It provides web and mobile technology solutions, specializing in design, development, and support for businesses of all sizes globally. |
1,493 |
| 46 | 1,484 | |
| 47 |
Windows App Developergudens.com
A company specializing in developing technically complex mobile apps for small, medium, and large enterprises, focusing on Windows-based IoT and cross-platform development |
1,480 |
| 48 |
Lifestyle AIorg.uk
A sophisticated brand inspiring fashion, art, photography, music, beauty lovers to try new things, stay informed, and be their best selves |
1,472 |
| 49 |
iOS App Development
The company specializes in developing custom mobile apps for Android, iOS, and Windows platforms, offering native, hybrid, and cross-platform solutions |
1,459 |
| 50 |
Xamarin Developerfreelancehubs.com
A business that operates independently, offering freelance services and self-employment opportunities without being tied to a specific company |
1,435 |
| 51 |
Ideagenideagen.com
Provides best-in-class software and regulatory expertise to highly regulated industries to manage risk and ensure compliance. |
1,386 |
| 52 |
Builder.aibuilder.ai
The company offers customizable, fast, and cost-effective apps that fall between low-code and custom software categories |
1,351 |
| 53 |
SMTsmartmt.com
Global mechanical transmission innovator providing CAE software, technical services, and test facilities in the UK, with satellite offices worldwide for global expertise |
1,348 |
| 54 |
Prolificprolific.com
Prolific helps research teams gather high-quality human data at scale through a simple platform for AI model development and important research |
1,317 |
| 55 |
Klipboardklipboard.com
Provides industry-leading, cloud-based business management software to companies across various sectors, helping them modernise operations, increase efficiency, and stay ahead. |
1,306 |
| 56 |
HP Autonomyautonomy.com
Processes unstructured data like social media, email, and video, providing management and analytic tools to extract real-time meaning for businesses. |
1,235 |
| 57 |
Cox Automotive Europecoxautoinc.eu
Driving digital transformation in automotive industry through innovative solutions for defleet, remarketing, retail, and mobility operations, in partnership with customers worldwide |
1,208 |
| 58 |
Project Manager
Specializing in project management software, our company helps businesses efficiently plan, organize, and execute projects to achieve success |
1,164 |
| 59 |
Wolters Kluwer - Financial Services Solutionswolterskluwer.com
Provides expert software and information solutions for financial compliance, risk, regulatory reporting, and tax reporting to financial institutions globally. |
1,109 |
| 60 |
MHRmhrglobal.com
MHR provides secure, cloud-based HR, payroll, and finance systems to over 1300 customers, helping them streamline operations and make data-driven decisions |
1,104 |
| 61 |
Brandwatchbrandwatch.com
It provides consumer intelligence, social media management, and influencer management to help businesses understand and engage with their customers effectively. |
1,100 |
| 62 |
Freelance Developer
Freelance developer with expertise in web, mobile, and backend development, cloud computing, DevOps, software testing Committed to delivering high-quality software solutions |
1,078 |
| 63 |
GP Surgerymysurgery.uk
Creating highly functional and visually appealing websites specifically designed for General Practitioner surgeries |
1,077 |
| 64 |
Deltatredeltatre.com
Global leader in fan-first digital experiences offering innovative products/services for sports, media, and entertainment, reaching over one billion minutes of digital content annually |
1,055 |
| 65 |
Medical practicethehealthmarketing.com
Innovative healthcare marketing agency providing digital marketing services for medical practices, healthcare businesses, and medical device companies to achieve success |
1,042 |
| 66 | 1,028 | |
| 67 |
Nonprofit AImarketinglo.com
A company specializing in website design and digital marketing for non-profit organizations, helping them raise awareness, generate income, and deliver services effectively |
1,021 |
| 68 |
OpenBetopenbet.com
Provides advanced betting technology, content, and services to operators, ensuring player protection, compliance, and innovative solutions for gaming and betting. |
1,020 |
| 69 |
Wearable App Developercodebees.org
This company specializes in developing wearable apps that are platform-independent, immersive, and seamlessly integrated across multiple devices for optimal user experience |
1,005 |
| 70 |
EMISemishealth.com
The company is a UK leader in providing clinical IT systems for healthcare organizations, promoting joined-up patient care across various healthcare services |
1,005 |
| 71 |
Linuxlinuxcommunity.com
Global community of users and developers working with Linux-based OS's, providing support, news, guides, and assistance on all things Linux and GNU/Linux |
985 |
| 72 |
VeriParkveripark.com
This global solutions provider enables financial institutions to enhance customer experiences, drive engagement, and increase revenue through intelligent customer experience solutions |
980 |
| 73 |
Ab Initio Softwareabinitio.com
Development of a high-performance, scalable data processing and analysis platform combined with expert implementation and support across diverse industries. |
965 |
| 74 |
Amdarisamdaris.com
Providing innovative software development, product design, digital transformation, application support, and consultancy services from UK and Eastern Europe. |
958 |
| 75 |
UX Developerguden.org
This company provides services or products that help people wake up or become more alert and energetic |
946 |
| 76 |
Data Developermsdevs.org
A data entry company offering outsource services like data conversion, processing, and quality results, with a focus on security and confidentiality |
944 |
| 77 |
Open Sourcelinuxcommunity.com
The company creates and promotes open-source projects and products, fostering collaborative participation, transparency, and community-oriented development in software |
924 |
| 78 |
Treatwelljobs.treatwell.com
Connects people with beauty and wellness salons across 13 countries using smart salon management software, making treatments accessible and helping businesses grow. |
918 |
| 79 |
Hotels AIgudens.com
A mobile app using AI to help users find, compare, and book hotels easily, with features like price comparison, room booking, reviews, and ratings |
918 |
| 80 |
Seeking a New Opportunityjobsify.org
The company provides project management and consulting services in the Legal and Medical software industries, focusing on customer satisfaction and collaboration |
908 |
| 81 |
Freshafresha.com
Online marketplace connecting consumers with beauty and wellness businesses, offering appointment booking, payment, and comprehensive business management software. |
903 |
| 82 |
Reward Gatewayrewardgateway.com
Helping companies enhance employee experience through benefits, rewards, recognition, and wellbeing to attract and retain top talent worldwide. |
900 |
| 83 |
Quantexaquantexa.com
Global platform connecting siloed systems to visualize complex relationships, providing single views of data for risk mitigation and strategic organizational decision making. |
895 |
| 84 | 877 | |
| 85 |
Compare the Marketcomparethemarket.com
This company helps make financial decisions easy for customers, while also prioritizing the well-being and development of their employees |
876 |
| 86 |
Liberty ITliberty-it.co.uk
A technology company backed by global giant Liberty Mutual Insurance, specializing in problem-solving, innovation, and customer interactions with a focus on employee well-being |
835 |
| 87 |
Anything Worldanything.world
The company brings 3D models to life quickly and easily using AI, with tools to animate, access assets, and build worlds |
833 |
| 88 |
SAIsaigroups.co.uk
The company offers a platform that uses machine vision AI on CCTV feeds to prevent theft, increase sales, and enhance operational effectiveness for retailers |
832 |
| 89 |
Synthesiasynthesia.io
AI-powered video creation platform enabling companies to produce videos in 140 languages, saving significant time and budget costs. |
800 |
| 90 |
Lead Forensicsleadforensics.com
It provides software that identifies anonymous website visitors, offering businesses valuable information to convert them into actionable sales-ready leads. |
800 |
| 91 |
GMAIL IT LTDaccounts.google.com
A technology company located in London, UK, specializing in IT services |
798 |
| 92 |
Everyoneweareeveryone.com
A digital agency specializing in transforming companies through creative designs, robust technical platforms, and collaborative approaches in various industry sectors |
774 |
| 93 |
Executive AIagency.org.uk
International executive search firm specializing in identifying high-caliber senior executives through proactive, research-led approach for bespoke recruitment solutions with global reach |
737 |
| 94 |
Zonalzonal.co.uk
A UK-based tech supplier for hospitality businesses, offering integrated systems for EPoS, online table bookings, ordering, loyalty programs, and data-driven operations management |
729 |
| 95 |
Acturis Limitedacturis.com
Acturis is a leading tech provider for brokers, insurers, and MGAs globally, delivering digital transformation and driving innovation in the insurance industry |
714 |
| 96 |
Housefulhouseful.co.uk
Houseful is a leading provider of residential property software, data, and insights through a family of trusted brands driving progress in the property industry |
687 |
| 97 |
Computer Softwarelinkedin.com
A UK-based computer software company specializing in developing software applications and solutions for various industries |
685 |
| 98 |
Digital Sciencedigital-science.com
AI-focused technology company providing innovative solutions to researchers, universities, funders, industry, and publishers advancing global research. |
678 |
| 99 |
Construction AImarketizon.com
A construction marketing agency specializing in increasing sales, raising enquiry levels, and connecting clients with key decision-makers in the industry worldwide |
665 |
| 100 |
ATG (Auction Technology Group)auctiontechnologygroup.com
A global technology company transforming the auction industry with leading online marketplaces for art, antiques, industrial, and commercial items worldwide |
661 |
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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 Oct 9, 2026.
More company lists in the United Kingdom
- The largest companies in the United Kingdom 30,947
- Financial Services companies in the United Kingdom 3,370
- IT Services and IT Consulting companies in the United Kingdom 1,436
- Retail companies in the United Kingdom 1,310
- Wellness and Fitness Services companies in the United Kingdom 1,044
- Hospitality companies in the United Kingdom 998
- Retail Apparel and Fashion companies in the United Kingdom 738
- Advertising Services companies in the United Kingdom 713
- Food and Beverage Manufacturing companies in the United Kingdom 713
- Hospitals and Health Care companies in the United Kingdom 710
- Insurance companies in the United Kingdom 679
- Construction companies in the United Kingdom 632
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- AI-native companies in the United Kingdom 582
- Food and Beverage Services companies in the United Kingdom 537
- Restaurants companies in the United Kingdom 534
- Non-profit Organizations companies in the United Kingdom 490
- Staffing and Recruiting companies in the United Kingdom 464
- Technology, Information and Internet companies in the United Kingdom 439
- Business Consulting and Services companies in the United Kingdom 438
- Entertainment Providers companies in the United Kingdom 432
- Government Administration companies in the United Kingdom 395
- Higher Education companies in the United Kingdom 379
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The same list elsewhere in United Kingdom
- Software Development companies in London 1,136
- Software Development companies in Manchester 64
- Software Development companies in Cambridge 54
- Software Development companies in Edinburgh 38
- Software Development companies in Birmingham 29
- Software Development companies in Leeds 28
- Software Development companies in Newcastle upon Tyne 28
- Software Development companies in Glasgow 25