# Top 30 Events Services companies in London
Tamtam tracks 56 Events Services companies headquartered in London. This list ranks the 30 largest by number of employees on LinkedIn, led by Informa Markets, Hyve Group and Imagination. Their median headcount is 358. Half of them were founded in 2000 or later.
This selection of London-based Events Services companies includes a mix of large established firms and more recently founded businesses. Companies like Informa Markets, Hyve Group, and UBM plc focus on organizing large-scale B2B events, exhibitions, and conferences across various industries globally. Other firms such as Imagination and Identity specialize in experience design and creative event production, delivering bespoke solutions for clients.
A notable characteristic among these companies is their focus on connecting industries and fostering community growth through events. Many of them, including Clarion Events and CloserStill Media, manage extensive portfolios of events and media brands. There is a strong presence of companies founded in the late 20th and early 21st centuries, indicating a sustained growth in the events sector in London.
๐ฌ๐ง London ยท 30 companies ยท Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Informa Markets](https://www.tamtam.ai/c/informa-markets) (informamarkets.com)
Informa Markets creates international B2B events and brands for various industries to trade, innovate, and grow through exhibitions, digital content, and data solutions | Events Services | ๐ฌ๐ง London | 3,213 | 2005 |
| 2 | [Hyve Group](https://www.tamtam.ai/c/hyve-group) (hyve.group)
Organizing in-person events, online platforms, and facilitated meetings to connect industry ecosystems and foster community growth and progress. | Events Services | ๐ฌ๐ง London | 2,246 | 1991 |
| 3 | [Imagination](https://www.tamtam.ai/c/imagination) (imagination.com)
Experience Design Company specializing in consulting, destinations, content, and live experiences for global clients, challenging the status quo with creative solutions | Events Services | ๐ฌ๐ง London | 887 | 1968 |
| 4 | [CloserStill Media](https://www.tamtam.ai/c/closerstill-media) (closerstillmedia.com)
Organizes over 200 B2B events and communities across multiple industries, fostering learning, networking, and growth with a dedicated team. | Events Services | ๐ฌ๐ง London | 850 | 2009 |
| 5 | [UBM plc](https://www.tamtam.ai/c/ubm-plc) (informamarkets.com)
Organises and operates over 500 exhibitions across 15 industry sectors, providing B2B information services and global event management. | Events Services | ๐ฌ๐ง London | 849 | 1918 |
| 6 | [Clarion Events](https://www.tamtam.ai/c/clarion-events) (clarionevents.com)
Organises and manages a diverse portfolio of 125 events and media brands worldwide, fostering growth and customer satisfaction. | Events Services | ๐ฌ๐ง London | 789 | |
| 7 | [Enterprenuer](https://www.tamtam.ai/c/enterprenuer) (linkedin.com)
The Entrepreneur Network fosters collaboration to help UK business owners succeed, fueling ecosystems for job creation, innovation, and economic growth | Events Services | ๐ฌ๐ง London | 659 | |
| 8 | [Identity](https://www.tamtam.ai/c/identity-london) (identityglobal.com)
Human experience-driven storytelling agency delivering inspiring moments and positive impact for global brands and organizations through innovative, creative, and impactful experiences | Events Services | ๐ฌ๐ง London | 585 | |
| 9 | [High Society](https://www.tamtam.ai/c/high-society) (high-society.co.uk)
High Society provides top-notch, impeccably trained staff for a variety of events, known for their reliability, personability, and impeccable presentation | Events Services | ๐ฌ๐ง London | 566 | 1995 |
| 10 | [Sodexo Prestige Venues & Events](https://www.tamtam.ai/c/sodexo-prestige-venues-and-events) (prestigevenuesandevents.sodexo.com)
Specializes in providing iconic UK venues and expert event planning for corporate meetings, weddings, and special celebrations. | Events Services | ๐ฌ๐ง London | 555 | 1966 |
| 11 | [WISDOM](https://www.tamtam.ai/c/wisdom) (wisdom.events)
Leading business events organiser in energy and maritime industries, hosting exclusive summits, conferences, and exhibitions for top-tier experts and executives worldwide | Events Services | ๐ฌ๐ง London | 480 | |
| 12 | [Event Concept](https://www.tamtam.ai/c/event-concept) (eventconcept.com)
Creative agency and production house delivering extraordinary global events and everlasting experiences by seamlessly blending strategic agency thinking with technical event production. | Events Services | ๐ฌ๐ง London | 470 | 1994 |
| 13 | [Event Marketing and Management](https://www.tamtam.ai/c/event-marketing-and-management) (eventguide.info)
Global brand experience agency creating engaging and innovative event experiences to build relationships between people and brands Specializing in event design, management, and technology | Events Services | ๐ฌ๐ง London | 465 | 2017 |
| 14 | [Excel London](https://www.tamtam.ai/c/excel-london) (excel.london)
An internationally renowned exhibition and conference center in London, hosting 400 events yearly, welcoming millions of visitors, and contributing billions to the city's economy | Events Services | ๐ฌ๐ง London | 393 | 2000 |
| 15 | [Elevate Global](https://www.tamtam.ai/c/elevate-global) (weareelevate.global)
Elevate Global is a global staffing partner specializing in brand experiences, connecting people and data to optimize impact for clients | Events Services | ๐ฌ๐ง London | 358 | 2006 |
| 16 | [CWC Event Solutions](https://www.tamtam.ai/c/cwc-event-solutions) (cwc-solutions.com)
A global Professional Conference Organiser specializing in energy industries, offering comprehensive event management services with expertise in the oil & gas sector | Events Services | ๐ฌ๐ง London | 316 | |
| 17 | [Ministry of Sound](https://www.tamtam.ai/c/ministry-of-sound) (ministryofsound.com)
This company creates unforgettable moments through diverse areas like music, events, digital content, and club operations, fostering creativity and talent | Events Services | ๐ฌ๐ง London | 311 | 1991 |
| 18 | [Montgomery Group](https://www.tamtam.ai/c/montgomery-group) (montgomerygroup.com)
Global events company with over a century of expertise in delivering market-leading events across various industries, focusing on nurturing relationships and developing opportunities for all stakeholders | Events Services | ๐ฌ๐ง London | 252 | 1895 |
| 19 | [London Marathon Events](https://www.tamtam.ai/c/london-marathon-events) (londonmarathongroup.org)
Organizes world-leading mass participation running and swimming events, raising significant funds for charity and providing grants to projects that inspire physical activity. | Events Services | ๐ฌ๐ง London | 247 | 1981 |
| 20 | [Conference Series LLC LTD.](https://www.tamtam.ai/c/conference-series-llc-ltd) (conferenceseries.com)
Global platform organizing 3000+ events in scientific disciplines, featuring renowned speakers, live streaming, knowledge dissemination, networking opportunities, and research support | Events Services | ๐ฌ๐ง London | 222 | 2007 |
| 21 | [Smyle](https://www.tamtam.ai/c/smyle) (identityglobal.com)
A creative agency specializing in digital and physical experiences, producing live activations, digital content, and engaging campaigns for global brands | Events Services | ๐ฌ๐ง London | 219 | 2003 |
| 22 | [Strata](https://www.tamtam.ai/c/strata-34273) (stratacreate.com)
Crafts brand experiences through insight, strategy, and creative expertise, providing experience design, event production, logistics, and integrated marketing solutions for meaningful audience engagement. | Events Services | ๐ฌ๐ง London | 190 | 2019 |
| 23 | [RunThrough](https://www.tamtam.ai/c/runthrough) (runthrough.com)
Running community in the UK hosting events at iconic locations such as palaces, parks, and major tourist attractions for over 200,000 runners annually | Events Services | ๐ฌ๐ง London | 182 | 2013 |
| 24 | [Nexus Conference](https://www.tamtam.ai/c/nexus-conference) (nexus-conference.com)
BioPharma Nexus offers customized business gatherings in a comfortable environment, turning client dreams into reality with expertise and industry knowledge | Events Services | ๐ฌ๐ง London | 181 | 2014 |
| 25 | [CATERING HEROES LONDON](https://www.tamtam.ai/c/catering-heroes-london) (ww1.cateringheroesldn.co.uk)
London-based hospitality company providing professional staff for events, including bartenders, servers, brand ambassadors, and custom build-outs to create unique and memorable experiences | Events Services | ๐ฌ๐ง London | 177 | 2000 |
| 26 | [GovNet](https://www.tamtam.ai/c/govnet) (govnet.co.uk)
The company is a leading provider of public sector events and training courses in the UK, focusing on addressing challenges through award-winning exhibitions and conferences | Events Services | ๐ฌ๐ง London | 175 | 1997 |
| 27 | [Active Communications International (ACI Europe)](https://www.tamtam.ai/c/active-communications-international-aci-europe) (wplgroup.com)
Global conference organizer specializing in energy & chemicals sectors Providing forums for industry leaders to network, learn, and discuss latest industry challenges | Events Services | ๐ฌ๐ง London | 174 | 1999 |
| 28 | [People&Co.](https://www.tamtam.ai/c/people-and-co) (peopleandco.com)
An independent creative agency specializing in creating impactful experiences through connected campaigns, original content, immersive environments, and live audience engagement | Events Services | ๐ฌ๐ง London | 172 | 2015 |
| 29 | [Tarsus Group](https://www.tamtam.ai/c/tarsus-group) (tarsus.com)
Global B2B event and media company specializing in delivering industry-specific publications and events worldwide, helping businesses address challenges and seize opportunities | Events Services | ๐ฌ๐ง London | 172 | 1998 |
| 30 | [EDS](https://www.tamtam.ai/c/eds-london) (edsxevents.com)
EDS Connect cultivates prestigious networks for C-Suite leaders, facilitating exchange of visionary ideas and strategic solutions through exclusive summits and bespoke experiences | Events Services | ๐ฌ๐ง London | 172 | 2023 |
## 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 12, 2026.
## More company lists in London
- [The largest companies in London](https://www.tamtam.ai/l/largest-companies-london) (12,882)
- [Multinational companies in London](https://www.tamtam.ai/l/multinational-companies-london) (3,652)
- [Financial Services companies in London](https://www.tamtam.ai/l/financial-services-companies-london) (1,862)
- [Financial services firms in London](https://www.tamtam.ai/l/financial-services-firms-london) (1,824)
- [SaaS companies in London](https://www.tamtam.ai/l/saas-companies-london) (1,615)
- [Professional services firms in London](https://www.tamtam.ai/l/professional-services-firms-london) (1,248)
- [Software Development companies in London](https://www.tamtam.ai/l/software-development-companies-london) (1,217)
- [Retail chains in London](https://www.tamtam.ai/l/retail-chains-london) (942)
- [IT Services and IT Consulting companies in London](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-london) (693)
- [Companies with a mobile app in London](https://www.tamtam.ai/l/companies-with-mobile-app-london) (667)
- [Consulting firms in London](https://www.tamtam.ai/l/consulting-firms-london) (648)
- [IT services companies in London](https://www.tamtam.ai/l/it-services-companies-london) (607)
- [Subscription businesses in London](https://www.tamtam.ai/l/subscription-businesses-london) (544)
- [Venture capital and private equity firms in London](https://www.tamtam.ai/l/vc-and-private-equity-firms-london) (539)
- [Marketing and communications agencies in London](https://www.tamtam.ai/l/marketing-agencies-london) (533)
- [Retail Apparel and Fashion companies in London](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-london) (498)
- [Advertising Services companies in London](https://www.tamtam.ai/l/advertising-services-companies-london) (480)
- [Companies with in-house R&D in London](https://www.tamtam.ai/l/r-and-d-companies-london) (477)
- [AI companies in London](https://www.tamtam.ai/l/ai-companies-london) (456)
- [Investment Management companies in London](https://www.tamtam.ai/l/investment-management-companies-london) (452)
- [Hotel and hospitality groups in London](https://www.tamtam.ai/l/hospitality-groups-london) (445)
- [Luxury brands in London](https://www.tamtam.ai/l/luxury-brands-london) (428)
- [AI-native companies in London](https://www.tamtam.ai/l/ai-native-companies-london) (407)
- [E-commerce companies in London](https://www.tamtam.ai/l/ecommerce-companies-london) (384)
## The same list elsewhere in United Kingdom
- [Events Services companies in the United Kingdom](https://www.tamtam.ai/l/events-services-companies-united-kingdom) (132)
## The same list elsewhere
- [Events Services companies in the world](https://www.tamtam.ai/l/events-services-companies-in-the-world) (3,046)
- [Events Services companies in Europe](https://www.tamtam.ai/l/events-services-companies-in-europe) (2,549)
---
Source: https://www.tamtam.ai/l/events-services-companies-london