| # | Company | Employees |
|---|---|---|
| 1 | 912 | |
| 2 |
Hippohippodigital.co.uk
Designs and builds bespoke digital services using data, human-centered design, and engineering, focusing on inclusive and impactful solutions for organizations and society. |
631 |
| 3 |
Xalientxalient.com
Xalient offers transformative network, security, and communication solutions with AIOps technologies to build resilient, adaptable networks and enhance customer experiences |
267 |
| 4 |
Aire Logic Limitedairelogic.com
Specializes in healthcare ICT strategy, software and product development, focusing on national system integration and full software lifecycle expertise. |
258 |
| 5 |
Cognisyscognisys.co.uk
Providing solutions, testing, and knowledge to protect businesses from cyber attackers |
134 |
| 6 |
SEP2sep2.security
UK-based cyber security specialist service provider with dedicated experts available 24/7/365, offering next-generation SIEM, EDR, and cloud security services. |
94 |
| 7 | 94 | |
| 8 |
Audaciaaudacia.co.uk
A digital transformation & software development company specializing in designing, developing, and delivering scalable digital strategies and critical software systems for various industries |
84 |
| 9 |
Alscientalscient.com
Providing tailored Salesforce and AWS cloud solutions, supporting digital transformation with certified experts across various sectors in UK and Europe. |
64 |
| 10 |
Icon Geotracsis-geointelligence.com
Provides Earth Imaging and Geoscience services, unique technical solutions for agricultural monitoring, spatial analytics, and GIS systems to commercial and government organizations. |
60 |
| 11 |
Excelledia Venturesexcellediaventures.com
The company provides a range of enterprise solutions, invests in technology advancements, and supports startups in building and scaling ventures across various sectors |
56 |
| 12 |
Pentest Peopleworknest.com
A UK-based security consultancy specializing in Penetration Testing as a Service, offering consultant-led tests, vulnerability assurance, and advanced SecurePortal technology for ongoing threat protection |
47 |
| 13 |
IDS-Group (UK | Europe | Middle East)ids-group.co.uk
A UK-owned agile software development and systems integration specialist, delivering enhanced data security and innovative solutions for start-ups and enterprises worldwide |
42 |
| 14 |
Proximityproximity.co.uk
A software solutions company specializing in logistics, manufacturing ERP, retail, and finance sectors Provides development, support, and maintenance for global companies |
31 |
| 15 |
Korelogic Limitedkorelogic.co.uk
An independent software development company with expertise in financial, gaming, delivery, and hospitality sectors Specializing in mobile and web interfaces |
19 |
| 16 |
T5 Digitalt5digital.com
A technology consultancy specializing in custom software, cloud services, and digital transformation consulting for businesses, with expertise in Financial Services, Sports Media, and Retail |
19 |
| 17 |
Edenjustaskeden.co.uk
A technology company simplifying operations, protecting businesses, offering diverse services, and fostering strong vendor partnerships for industry-leading products and service |
18 |
| 18 | 16 | |
| 19 |
Mint庐 - Leading Salesforce Consulting Partnermintcrm.co.uk
A leading Salesforce consulting practice focused on delivering efficient Salesforce implementation, development, marketing solutions, training, and support tailored to clients' needs |
15 |
| 20 |
Fresh Mango Technologies (UK)freshmango.co.uk
An IT support and cybersecurity provider with over 25 years of experience, offering services to businesses of all sizes for stress-free IT solutions |
14 |
| 21 |
Statementstatementagency.com
Specialist Shopify Plus eCommerce agency creating successful online stores for leading brands, offering bespoke design, theme customization, replatforming, and ongoing optimization services |
13 |
| 22 |
Brandsoftbrandsoftonline.com
A skilled team of developers specializing in designing and building websites, web applications, e-commerce solutions, and marketplace integrations with extensive experience in various technologies |
12 |
| 23 |
RevOdysseyrevodyssey.com
Specialize in revenue strategy, HubSpot implementation, system integrations, and streamlining operations for B2B and B2C businesses |
11 |
| 24 |
Mund Consulting Ltdmund-consulting.com
A team of professionals specializing in data analytics and AI, with a presence in the UK and India, offering cost-effective solutions |
7 |
| 25 |
Cyber Security Partnerscsp.partners
Specializing in Cyber Security Consultancy, Data Protection, Certification, and Compliance services to help clients identify and mitigate security threats and risks |
5 |
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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 24, 2026.
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