> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-in/united-kingdom/marketing-and-advertising/ # Marketing and advertising agencies in the United Kingdom Larger marketing and advertising agencies headquartered in the United Kingdom: who they are, what they run and how to reach their people. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Larger marketing and advertising agencies headquartered in the United Kingdom include WPP, Clear Channel Europe, Mindshare, HH Global and Monks. Below are the tools that stand out, where they are based and how big they are. ## Which marketing and advertising agencies are headquartered in the United Kingdom? They include WPP, Clear Channel Europe, Mindshare, HH Global and Monks. The table lists a selection in alphabetical order; names link to company profiles. | Company | Size | Tools detected | | --- | --- | --- | | Advantage Smollan | 2,000 to 5,000 | 11 | | Boutique | 2,000 to 5,000 | 14 | | [Clear Channel Europe](https://enrich.chat/company/clear-channel-europe/) | 10,000 to 25,000 | 14 | | Factory | 2,000 to 5,000 | 14 | | HH Global | 5,000 to 10,000 | 34 | | Hogarth | 5,000 to 10,000 | 15 | | iProspect | 2,000 to 5,000 | 29 | | Iris | 2,000 to 5,000 | 33 | | Jellyfish | 2,000 to 5,000 | 55 | | Jobmedic.co.uk | 5,000 to 10,000 | 15 | | MediaCom | 5,000 to 10,000 | 21 | | Mindshare | 10,000 to 25,000 | 12 | | MNC | 2,000 to 5,000 | 12 | | Monks | 5,000 to 10,000 | 35 | | Mother | 2,000 to 5,000 | 6 | | PHD | 5,000 to 10,000 | 18 | | Saatchi & Saatchi | 5,000 to 10,000 | 8 | | Wavemaker | 5,000 to 10,000 | 21 | | [WPP](https://enrich.chat/company/wpp/) | 100,000+ | 14 | | Young Professionals | 2,000 to 5,000 | 7 | | Zenith | 5,000 to 10,000 | 14 | ## What technology do marketing and advertising agencies in the United Kingdom use? These tools stand out among them: each is detected more often here than across all the organizations listed. The tick on each bar marks that wider average. **Figure: Tools that stand out among marketing and advertising agencies in United Kingdom.** Bars for the share of listed marketing and advertising agencies in United Kingdom where each tool was detected, with a tick for the share across everything listed: WordPress (self-hosted) 81% against 50%, AWS 48% against 29%, Atlassian Cloud 29% against 18%, Gmail 29% against 18%, Mailchimp SPF 29% against 6%, Basis Technologies 14% against 5%. *Share of listed marketing and advertising agencies in the United Kingdom where each tool was detected. The tick marks the share across all listed organizations.* ## Where in the United Kingdom are they based? The bars show the headquarters city of the listed marketing and advertising agencies. **Figure: Headquarters cities of marketing and advertising agencies in United Kingdom.** Bars for the share of listed marketing and advertising agencies in United Kingdom headquartered in each city: London 57%, Fetcham 5%, Leeds 5%, Winnersh 5%, Ilkeston 5%. *Share of listed marketing and advertising agencies in the United Kingdom by headquarters city.* ## How big are marketing and advertising agencies in the United Kingdom? The columns show how they spread across six size ranges. **Figure: Size of marketing and advertising agencies in United Kingdom.** Six columns for the share of listed marketing and advertising agencies in United Kingdom in each size range: 2-5K 43%, 5-10K 43%, 10-25K 10%, 25-50K 0%, 50-100K 0%, 100K+ 5%. *Share of listed marketing and advertising agencies in the United Kingdom in each size range.* ## More to explore Other industries in the United Kingdom: [Government administration](https://enrich.chat/companies-in/united-kingdom/government-administration/)[Higher education](https://enrich.chat/companies-in/united-kingdom/higher-education/)[Retail](https://enrich.chat/companies-in/united-kingdom/retail/)[Hospitals and health care](https://enrich.chat/companies-in/united-kingdom/hospitals-and-health-care/)[Information technology and services](https://enrich.chat/companies-in/united-kingdom/information-technology-and-services/)[Financial services](https://enrich.chat/companies-in/united-kingdom/financial-services/)[Nonprofit organization management](https://enrich.chat/companies-in/united-kingdom/nonprofit-organization-management/)[Construction](https://enrich.chat/companies-in/united-kingdom/construction/)[Utilities](https://enrich.chat/companies-in/united-kingdom/utilities/)[Law practice](https://enrich.chat/companies-in/united-kingdom/law-practice/)[All of United Kingdom](https://enrich.chat/companies-in/united-kingdom/) Marketing and advertising elsewhere: [United States](https://enrich.chat/companies-in/united-states/marketing-and-advertising/)[New York](https://enrich.chat/companies-in/new-york/marketing-and-advertising/)[Marketing and advertising](https://enrich.chat/industries/marketing-and-advertising/) ## How do you reach agency owners, heads of strategy and operations leaders at marketing and advertising agencies in the United Kingdom? Pick an organization from the table, then ask your AI agent for the people in the roles you sell to. ```text Use www.enrich.chat to find agency owners, heads of strategy and operations leaders at [company] in the United Kingdom, with titles and verified work emails ``` ## Frequently asked questions ### Which marketing and advertising agencies are headquartered in the United Kingdom? They include WPP, Clear Channel Europe, Mindshare, HH Global and Monks. The page lists a selection with links to their profiles. ### What technology do marketing and advertising agencies in the United Kingdom use? Tools that stand out include WordPress (self-hosted), AWS, Atlassian Cloud and Gmail. ### How big are marketing and advertising agencies in the United Kingdom? They range from about 2,000 employees to well over 100,000. The columns on this page show the spread. ### Who do you sell to? Usually agency owners, heads of strategy and operations leaders. Ask your AI agent to use www.enrich.chat to find them with verified work emails. ## Try this prompt Find agency owners, heads of strategy and operations leaders ```text Use www.enrich.chat to find agency owners, heads of strategy and operations leaders at [company] in the United Kingdom, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Government agencies in the United Kingdom](https://enrich.chat/companies-in/united-kingdom/government-administration/) - [Colleges and universities in the United Kingdom](https://enrich.chat/companies-in/united-kingdom/higher-education/) - [Retailers in the United Kingdom](https://enrich.chat/companies-in/united-kingdom/retail/) - [Hospitals and health systems in the United Kingdom](https://enrich.chat/companies-in/united-kingdom/hospitals-and-health-care/) - [Marketing and advertising agencies in the United States](https://enrich.chat/companies-in/united-states/marketing-and-advertising/) - [Marketing and advertising agencies in New York](https://enrich.chat/companies-in/new-york/marketing-and-advertising/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)