The most visible marketing agencies in Europe, October 2026

October 2026 · 105 questions asked from 7 countries · ChatGPT, Google AI Overviews, Gemini and Google AI Mode · 420 answers read

Leader

Havas

2Heralded Score, range 2–4

Most cited source

clutch.co

51citations

From Google AI Mode, Gemini, Google AI Overviews and ChatGPT

Where engines disagree most

Ogilvy

1/4engines put it in their top three

Top three on Google AI Overviews, not on Google AI Mode, Gemini and ChatGPT

Brands

Search is not measured for this board yet, so it ranks on AI answers.

Rank Brand Rank change Heralded Score All AI Score trend Mentioned Recommended By engine Mentioned by Change
1 Havas FR New entry 2 , range 2–4 2#1
2
  • : score 2 · #1
2% 1% First reading
2 Publicis Groupe FR New entry 2 , range 1–4 2#2
2
  • : score 2 · #2
2% 1% First reading
3 Ogilvy US New entry 2 , range 1–4 2#3
2
  • : score 2 · #3
2% 0% None First reading
4 WPP GB New entry 2 , range 1–3 2#4
2
  • : score 2 · #4
1% 0% First reading
– Accenture Song IE Unranked Too few answers Not measured
–
  • : Unranked
0% 0% None First reading
– Brainlabs GB Unranked Too few answers Not measured
–
  • : Unranked
1% 1% None First reading
– Dentsu JP Unranked Too few answers Not measured
–
  • : Unranked
0% 0% First reading
– Directive US Unranked Too few answers Not measured
–
  • : Unranked
0% 0% None First reading
– Ignite Visibility US Unranked Too few answers Not measured
–
  • : Unranked
0% 0% None First reading
– Ironpaper US Unranked Too few answers Not measured
–
  • : Unranked
0% 0% None First reading

“=” marks brands whose score ranges overlap, so the test cannot separate them. Every brand named in at least three answers is ranked. AI gives each brand’s score and rank from the engines’ answers; Search is not measured for this board yet. By engine has one dot per engine (ChatGPT, Google AI Overviews, Gemini and Google AI Mode), darker the more often it names the brand.

Most cited sources

Rank Source Type Cited in Engines Pages cited Brands its pages mention
1 clutch.co Directory 10.5% 4 of 4 21 Not read
2 semrush.com Vendor site 6.9% 4 of 4 25 Not read
3 sortlist.com Directory 6.2% 4 of 4 21 Not read
4 youtube.com Social 3.8% 2 of 4 18 Not read
5 google.com Vendor site 1.7% 2 of 4 17 Not read
6 sortlist.fr Directory 2.6% 3 of 4 11 Not read
7 blissagency.it Consultancy 3.1% 4 of 4 8 5
8 searchlab.nl Consultancy 3.3% 4 of 4 11 Not read
9 reddit.com Community 2.6% 3 of 4 10 Not read
10 sortlist.nl Directory 2.9% 4 of 4 11 Not read

Questions asked

QuestionLanguageMost recommended
marketing agency vs in-house marketing team in france English No brand recommended
Quelles sont les meilleures agences de marketing en France ? French Havas and Publicis Groupe, tied
Je dirige une entreprise de 50 personnes en France. Quelle agence de marketing devrions-nous engager ? French No brand recommended
best digital marketing agencies in france English Havas
marketing agency for a small business in france English No brand recommended
Digital marketing agency for a growing company in the UK English No brand recommended
How can a small company in the UK find a marketing agency that delivers leads? English No brand recommended
How do I choose a marketing agency for a product launch in the UK? English No brand recommended
In-house marketing team vs. marketing agency for a growing company in the UK English No brand recommended
Freelancers vs. a full-service marketing agency for small businesses in the UK English No brand recommended

Each engine's top three

Google AI Mode

No brand named in at least three answers.

Gemini

No brand named in at least three answers.

Method

Each leaderboard ranks brands on two sides. AI is how ChatGPT, Gemini, Google AI Overviews and Google AI Mode answer the board's buyer questions. Search is Google's top 10 results for the keywords behind those questions. All combines the two, where Search is measured.

For the AI side, each month Heralded asks every engine the same buyer questions, twice each, and reads every answer. An answer counts 0 for a brand it leaves out, 50 for a brand it names and 100 for a brand it recommends, and the Heralded Score is built from those. A brand named in at least three answers gets a score and a place.

How the leaderboards are measured