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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Informa Marketsinformamarkets.com
Informa Markets creates international B2B events and brands for various industries to trade, innovate, and grow through exhibitions, digital content, and data solutions |
3,213 | |||
| 2 |
Hyve Grouphyve.group
Organizing in-person events, online platforms, and facilitated meetings to connect industry ecosystems and foster community growth and progress. |
2,246 | |||
| 3 |
Imaginationimagination.com
Experience Design Company specializing in consulting, destinations, content, and live experiences for global clients, challenging the status quo with creative solutions |
887 | |||
| 4 |
CloserStill Mediacloserstillmedia.com
Organizes over 200 B2B events and communities across multiple industries, fostering learning, networking, and growth with a dedicated team. |
850 | |||
| 5 |
UBM plcinformamarkets.com
Organises and operates over 500 exhibitions across 15 industry sectors, providing B2B information services and global event management. |
849 | |||
| 6 |
Clarion Eventsclarionevents.com
Organises and manages a diverse portfolio of 125 events and media brands worldwide, fostering growth and customer satisfaction. |
789 | |||
| 7 |
Enterprenuerlinkedin.com
The Entrepreneur Network fosters collaboration to help UK business owners succeed, fueling ecosystems for job creation, innovation, and economic growth |
659 | |||
| 8 |
Identityidentityglobal.com
Human experience-driven storytelling agency delivering inspiring moments and positive impact for global brands and organizations through innovative, creative, and impactful experiences |
585 | |||
| 9 |
High Societyhigh-society.co.uk
High Society provides top-notch, impeccably trained staff for a variety of events, known for their reliability, personability, and impeccable presentation |
566 | |||
| 10 |
Sodexo Prestige Venues & Eventsprestigevenuesandevents.sodexo.com
Specializes in providing iconic UK venues and expert event planning for corporate meetings, weddings, and special celebrations. |
555 | |||
| 11 |
WISDOMwisdom.events
Leading business events organiser in energy and maritime industries, hosting exclusive summits, conferences, and exhibitions for top-tier experts and executives worldwide |
480 | |||
| 12 |
Event Concepteventconcept.com
Creative agency and production house delivering extraordinary global events and everlasting experiences by seamlessly blending strategic agency thinking with technical event production. |
470 | |||
| 13 |
Event Marketing and Managementeventguide.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 |
465 | |||
| 14 |
Excel Londonexcel.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 |
393 | |||
| 15 |
Elevate Globalweareelevate.global
Elevate Global is a global staffing partner specializing in brand experiences, connecting people and data to optimize impact for clients |
358 | |||
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 |
CWC Event Solutionscwc-solutions.com
A global Professional Conference Organiser specializing in energy industries, offering comprehensive event management services with expertise in the oil & gas sector |
316 | |||
| 17 |
Ministry of Soundministryofsound.com
This company creates unforgettable moments through diverse areas like music, events, digital content, and club operations, fostering creativity and talent |
311 | |||
| 18 |
Montgomery Groupmontgomerygroup.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 |
252 | |||
| 19 |
London Marathon Eventslondonmarathongroup.org
Organizes world-leading mass participation running and swimming events, raising significant funds for charity and providing grants to projects that inspire physical activity. |
247 | |||
| 20 |
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 |
222 | |||
| 21 |
Smyleidentityglobal.com
A creative agency specializing in digital and physical experiences, producing live activations, digital content, and engaging campaigns for global brands |
219 | |||
| 22 |
Stratastratacreate.com
Crafts brand experiences through insight, strategy, and creative expertise, providing experience design, event production, logistics, and integrated marketing solutions for meaningful audience engagement. |
190 | |||
| 23 |
RunThroughrunthrough.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 |
182 | |||
| 24 |
Nexus Conferencenexus-conference.com
BioPharma Nexus offers customized business gatherings in a comfortable environment, turning client dreams into reality with expertise and industry knowledge |
181 | |||
| 25 |
CATERING HEROES LONDONww1.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 |
177 | |||
| 26 |
GovNetgovnet.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 |
175 | |||
| 27 |
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 |
174 | |||
| 28 |
People&Co.peopleandco.com
An independent creative agency specializing in creating impactful experiences through connected campaigns, original content, immersive environments, and live audience engagement |
172 | |||
| 29 |
Tarsus Grouptarsus.com
Global B2B event and media company specializing in delivering industry-specific publications and events worldwide, helping businesses address challenges and seize opportunities |
172 | |||
| 30 |
EDSedsxevents.com
EDS Connect cultivates prestigious networks for C-Suite leaders, facilitating exchange of visionary ideas and strategic solutions through exclusive summits and bespoke experiences |
172 | |||
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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 12, 2026.
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