The companies in Reading presented here operate primarily in IT services, higher education, and specialized manufacturing. Mastek is an enterprise digital and cloud transformation partner, while the University of Reading focuses on research and sustainability. Other significant firms include BMI Group, which provides roofing solutions, and Keyloop, a global automotive technology company.
A notable pattern among these companies is their common headquarters location in Reading. Many of these firms also demonstrate a strong focus on technology and specialized services, such as Invenio with its SAP and MuleSoft solutions, and Wireless Logic, which offers global IoT connectivity.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Mastekmastek.com
Enterprise digital and cloud transformation partner delivering solutions in digital experience, cloud, data, automation, AI, and managed services globally. |
6,396 | |||
| 2 |
University of Readingreading.ac.uk
A leading research university in the UK with a focus on sustainability, climate research, and a diverse community of alumni and students |
5,661 | |||
| 3 |
BMI Groupbmigroup.com
Providing comprehensive flat and pitched roofing solutions across Europe with extensive experience, global support, and a wide production network. |
3,801 | |||
| 4 |
BaxterStoreybaxterstorey.com
Innovative workspace hospitality company since 2004, prioritizing team well-being to deliver unique, flavorful, and creative hospitality experiences for clients #FuelYourIndividuality |
3,352 | |||
| 5 |
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 | |||
| 6 |
XPS Groupxpsgroup.com
Leading UK pension consulting and administration business providing services to over 1,500 schemes, with awards for third-party administration, consultancy, and diversity |
1,492 | |||
| 7 |
CH&COchandcogroup.com
A group of chefs and nutritionists passionate about providing thoughtfully sourced and prepared food for emotional and physical wellbeing Hold a Royal Warrant |
1,101 | |||
| 8 |
Invenioinvenio-solutions.com
Specialises in SAP and MuleSoft solutions, transforming public and private sector organisations with consulting, implementation, and advanced technology applications worldwide. |
1,061 | |||
| 9 |
Wireless Logicwirelesslogic.com
Provides global IoT connectivity solutions with secure, flexible management across multiple networks for diverse industries and applications worldwide. |
874 | |||
| 10 |
Dialog Semiconductorrenesas.com
Provides standard and custom integrated circuits for IoT and Industrial IoT applications, focusing on power efficiency and performance across various markets. |
1,500 | |||
| 11 |
First Class Learning Ltd.firstclasslearning.co.uk
A leading provider of after school Maths and English tuition through a franchise model, with over 170 franchisees across the UK and expanding globally |
637 | |||
| 12 |
Lemongrasslemongrasscloud.com
Provides automated managed services for SAP on Cloud, enabling scalable, agile, and innovative enterprise solutions with near zero downtime migrations. |
535 | |||
| 13 |
ESP Global Servicesespglobalservices.com
Provides 24/7 multilingual IT support with service desks worldwide, offering remote, hybrid, and on-site IT service management. |
516 | |||
| 14 |
European Centre for Medium-Range Weather Forecasts - ECMWFecmwf.int
An independent organization providing weather forecasts, research, and data services to member states and commercial customers worldwide since 1975 |
482 | |||
| 15 |
SAS Internationalsasintgroup.com
British manufacturer of interior products, providing quality and innovative solutions for clients and specifiers worldwide through continuous investment in manufacturing facilities |
451 | |||
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 |
Bridewellbridewell.com
Trusted partner for cyber security, offering consulting and managed services, especially for Critical National Infrastructure, leveraging Microsoft Security technology for robust protection. |
379 | |||
| 17 | 364 | ||||
| 18 |
Readypower Groupreadypower.com
ReadyPower offers a wide range of plant and equipment for hire to the construction and railway industries in the UK, with nationwide coverage and specialized services for rail projects |
351 | |||
| 19 |
SFLdbsolutions.com
A leading production supplier offering AV installations internationally, creating environments for communication using audio, visual, lighting, scenic, and print technology |
344 | |||
| 20 |
ActiveOpsactiveops.com
A company specializing in AI-powered SaaS solutions for service operations, helping organizations make better and faster decisions to boost productivity and capacity |
326 | |||
| 21 |
Fast Food Systems Limitedffsbrands.co.uk
A family-owned company specializing in fast food franchising brands and innovative food holding equipment for quick service restaurants |
286 | |||
| 22 |
Westbury Street Holdingswshlimited.com
Parent company for leading food services and hospitality brands, prioritizing high standards in food, service, and client care Passionate about excellence |
210 | |||
| 23 |
LADERA TECHNOLOGYladeratechnology.com
A leading IT service company providing innovative solutions, project delivery, and business excellence through skilled technology specialists and customer-centric approach |
198 | |||
| 24 |
eCapital Commercial Finance UKecapital.com
Providing tailored invoice finance and funding solutions to UK small and medium-sized businesses, supporting growth and managing cashflow challenges. |
184 | |||
| 25 |
Castor Valicastorvali.com
Global security and risk management company providing International Protective Services, Corporate Security, and Training in emerging and high-risk markets with a focus on safety and reliability |
105 | |||
| 26 |
Eurofins Food Integrity and Innovationeurofins.co.uk
A food and drinks innovation partner within the Eurofins network, offering speed, flexibility, and expertise in product design for businesses |
96 | |||
| 27 |
Proventeqproventeq.com
Specialist provider of content migration, digital workplace solutions, and AI-powered tools for Enterprise Content Management Systems International presence with Microsoft Gold Partnership |
91 | |||
| 28 |
Magal Engineering Ltdmagal.co.uk
A leading automotive component and system supplier with global manufacturing facilities, specializing in complex design solutions, high-quality products, and competitive pricing |
79 | |||
| 29 |
FISCAL Technologiesfiscaltec.com
Provides cloud-based AI software for accounts payable teams to identify duplicate invoices, prevent fraud, reconcile statements, and protect organizational spend through transactions analysis. |
77 | |||
| 30 |
Hunter Macdonald Ltdnetcompany.com
A leading IT service company in Europe, specializing in digital transformation and agile IT solutions for global customers across various industries |
48 | |||
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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 Reading
- The largest companies in Reading 196
- IT Services and IT Consulting companies in Reading 28
- SaaS companies in Reading 26
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 Bristol 41
- 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