Company lists · Data refreshed September 2026
Top 25 Engagement marketing agencies based in the United Kingdom
There are 7,765 engagement marketing agencies headquartered in the United Kingdom (RevenueBase, September 2026). RevenueBase tracks 98,432 professional contacts across them, including 25,790 with verified work emails and 9,337 with mobile numbers. London is the largest hub.
This list covers engagement marketing agencies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 2, 2026.
The 25 largest engagement marketing agencies based in the United Kingdom
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 | “iProspect, a dentsu company, is a leading global digital-first media agency.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 743 |
| 2 | “Carat is the world’s first media agency and is privileged to work with some of today’s most storied and innovative brands.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 697 |
| 3 | “For over 20 years MKTG S+E has led some of the most transformative sponsorships in sports & entertainment.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 191 |
| 4 | “Neil Patel has been recognized by the Wall Street Journal, Forbes, and the United Nations, to name a few, as one of the most influential and successful marketers and entrepreneurs…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 306 |
| 5 | “We’re WongDoody, the creative technology agency.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 472 |
| 6 | “Founded in 2004, Anomaly is a difficult to define, but exciting to work at 'new model' agency.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 426 |
| 7 | “Iris is The Participation Agency.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 215 |
| 8 | “We’re Linney, a connected marketing partner helping brands turn complexity into clarity across digital, physical and ecommerce channels.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 450 |
| 9 | “We believe in the power of difference to make a difference.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 204 |
| 10 | “TMW, part of Accenture Song, is an integrated creative agency.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 163 |
| 11 | “MVF powers growth for our clients by connecting them to potential customers.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 246 |
| 12 | “Grapes Worldwide is a fastest growing global Marketing & Communication agency where we create “Story-Enabled Growth.” We are Data Obsessed and Strategically Engineered thinkers…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 74 |
| 13 | Blackjack PromotionsIndirect evidence “Blackjack are specialists in human connection, with expertise in the creation, delivery and deployment of travel retail and experiential campaigns.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 8 |
| 14 | “Forsman & Bodenfors is a globally recognised, Swedish-founded creative collective.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 179 |
| 15 | “Powerforce is an innovative and award-winning Field Marketing and Sales Solutions agency specialising in Strategic and On Demand Brand Activation campaigns.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 89 |
| 16 | “Creating what matters - C3 Creative Code and Content provides brands and companies a relevant place in the lives of their customers.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 107 |
| 17 | “We are an insight led marketing communications team, delivering leading innovations and experiences that are proven to drive business growth.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 75 |
| 18 | “Billion Dollar Boy is a global social agency with Creator Instinct™.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 99 |
| 19 | “Amplify is a global creative agency, specializing in experience, entertainment and culture.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 123 |
| 20 | “CC33 is a boutique agency with big ideas providing marketing solutions tailored to specifically meet your sales and marketing needs.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 28 |
| 21 | “We are storytellers, mime-artists, gesticulators.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 26 |
| 22 | “Gekko are a creative customer experience marketing agency, seeking to create campaigns which enhance the customer journey and our brands sales across retail, B2B and online…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 22 |
| 23 | “We are Grey London.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 69 |
| 24 | “At krow Group, our ideas are designed to make a genuine difference, building your brand and making it easier to buy by capturing and converting people’s attention.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 1 |
| 25 | “We are Prose On Pixels France aka POP France.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | 51 |
Showing 25 of 7,765 engagement marketing agencies based in the United Kingdom
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Engagement marketing agencies based in the United Kingdom at a glance
As of Sep 2, 2026Companies by employee count
Engagement marketing agencies by metro
| Metro | Companies |
|---|---|
| Engagement marketing agencies in London | 3101 |
| Engagement marketing agencies in Manchester | 340 |
| Engagement marketing agencies in Birmingham | 164 |
| Engagement marketing agencies in Leeds | 161 |
| Engagement marketing agencies in Glasgow | 114 |
| Engagement marketing agencies in Bristol | 111 |
| Engagement marketing agencies in Edinburgh | 85 |
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among engagement marketing agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “engagement marketing agencies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among engagement marketing agencies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 25,790 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 2, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
How many engagement marketing agencies are there based in the United Kingdom?
There are 7,765 engagement marketing agencies headquartered in the United Kingdom as of September 2026 (RevenueBase).
What is the largest company on this list?
Iprospect, headquartered in London, tops this list with the largest team on record.
Which city has the most engagement marketing agencies?
London leads with 3101 headquartered companies, followed by Manchester (340) and Birmingham (164).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 25,790 verified decision-maker contacts tracked across these 7,765 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 2, 2026.
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About this data
RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.
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