As search moves beyond traditional blue links, more brands are competing to be quoted, referenced, and surfaced directly inside answer-led experiences.
Answer Engine Optimisation (AEO) focuses on improving how your content is understood and selected by systems that generate answers, such as AI summaries in search results and conversational assistants. A strong AEO agency helps you structure content for clear responses, strengthen credibility signals, and measure visibility where clicks are no longer the only sign of success.
Methodology
To compile this list, we focused on agencies in 2026 that publicly position themselves around modern organic search performance, including structured content, technical SEO, digital PR, and strategies designed to improve visibility in answer-led results. We also researched agencies who listed AEO as one of the services they offer and had credible case studies to back it up. We also prioritised agencies with a proven track record in SEO strategy, content quality, technical implementation, and reporting.
1. The SEO Works
Location: Sheffield, Leeds, London, UK
Size: 51 to 200 employees
Strengths: SEO, AEO, technical SEO, content strategy, Digital PR, reporting
The SEO Works is a UK-based search marketing agency that offers a specialist Answer Engine Optimisation (AEO) service designed to help businesses appear as direct answers in AI-driven results, such as Google’s AI Overviews, ChatGPT, Microsoft Copilot and voice assistants.
Their approach centres on making content easy for these systems to understand, trust, and select by structuring pages around real user questions and providing clear, concise answers early in the content. This is supported by strong technical foundations, including schema implementation and content formatting that helps AI interpret context and intent.
The SEO Works combines its long-standing experience in organic SEO with emerging AEO techniques, ensuring that traditional search visibility and answer-based visibility work together rather than in isolation. They also recognise that success in AEO is not always measured by clicks alone, placing emphasis on brand presence, visibility within answers, and long-term authority as users increasingly rely on AI tools to source information. They offer a Free LLM Audit for businesses who want to get started in this area.
2. iPullRank
Location: Brooklyn, New York, US
Size: 11 to 50 employees
Strengths: SEO, content strategy, technical SEO, relevance engineering, generative AI services
iPullRank is a US agency known for strategy-led SEO with strong technical depth. Their work often centres on building content and site systems that are easy for search and answer platforms to interpret, supported by clear planning, measurement, and implementation detail.
3. Seer Interactive
Location: Philadelphia and San Diego, US
Size: Estimated around 100 to 250 employees
Strengths: SEO, analytics, paid media integration, content strategy, measurement
Seer Interactive positions itself as a data-led agency, which is a strong fit for AEO programmes that need clear tracking and decision-making. Their approach typically suits brands that want search performance tied to analytics, insight, and cross-channel learning.
4. Merkle
Location: Columbia, Maryland, US
Size: 10,001+ employees
Strengths: enterprise SEO, digital experience, data and analytics, performance marketing, technology enablement
Merkle operates at enterprise scale, supporting large organisations with complex websites and governance needs. For AEO, that scale can be valuable where change requires coordination across content, development, analytics, and brand teams.
5. iProspect
Location: London, UK
Size: 5,001 to 10,000 employees
Strengths: performance marketing, SEO, content, media planning, analytics
iProspect is a large performance agency that supports brands across paid and organic channels. For AEO, this can work well when organisations want answer visibility aligned with wider media strategy and measurement.
6. Jellyfish
Location: London, UK
Size: 1,001 to 5,000 employees
Strengths: search marketing, analytics, paid media, conversion optimisation, training, social
Jellyfish offers broad digital capability alongside training and enablement. That mix can suit AEO where teams need practical guidance on content structure, technical requirements, and how to report on answer-led visibility.
7. Search Laboratory
Location: Leeds, UK
Size: 51 to 200 employees
Strengths: SEO, paid search, content strategy, analytics, performance marketing
Search Laboratory is part of Havas and is associated with performance-led search delivery. For AEO, this type of agency is typically suited to programmes that blend technical SEO, content planning, and ongoing optimisation tied to results.
8. Builtvisible
Location: London, UK
Size: 51 to 200 employees
Strengths: technical SEO, digital PR, content strategy, UX, data, design and development
Builtvisible is a UK agency known for organic search strategy with strong technical and content capability. Their service mix supports AEO needs such as improving page structure, strengthening topical coverage, and building authority through Digital PR.
9. Wolfgang Digital
Location: Dublin 2, Ireland
Size: 51 to 200 employees
Strengths: SEO, content marketing, PPC, social media, email marketing
Wolfgang Digital is positioned as a performance-focused agency across organic and paid channels. For AEO, that can help when answer visibility needs to connect to acquisition and revenue, not only rankings.
10. Amsive
Location: New York, NY, US
Size: 501 to 1,000 employees
Strengths: performance marketing, customer acquisition, analytics, communications
Amsive operates as a larger marketing partner with a performance and customer focus. For AEO, that can support brands that want structured campaigns, consistent reporting, and integration with wider marketing activity.
11. Victorious
Location: San Francisco, California, US
Size: 51 to 200 employees
Strengths: SEO strategy, technical SEO, content support, reporting
Victorious is positioned as an SEO specialist, which suits AEO programmes that need focus and clear process. Their style is a fit for brands looking for structured optimisation across technical foundations and content improvements.
12. Siege Media
Location: Austin, Texas, US
Size: 51 to 200 employees
Strengths: SEO, content marketing, PR, GEO support
Siege Media is known for content-led SEO supported by promotion and authority building. That can translate well to AEO, where clear question-based content, strong topical coverage, and credibility signals influence selection in answer formats.
13. NP Digital
Location: San Diego, California, US
Size: 1,001 to 5,000 employees
Strengths: SEO, content, Digital PR, paid media integration, analytics
NP Digital operates globally with broad digital marketing delivery. For AEO, that breadth can help when brands need content production, technical recommendations, and distribution working together under a single strategy.
14. Re:signal
Location: London, UK
Size: 11 to 50 employees
Strengths: SEO, content marketing, technical SEO, ecommerce SEO
Re:signal is a smaller specialist agency, often associated with SEO and content delivery. That combination supports AEO fundamentals such as improving how pages answer questions, strengthening supporting content, and maintaining technical quality.
15. AnswerCraft
Location: Remote, International
Size: 11 to 50 employees
Strengths: Technical SEO, AEO, SEO strategy, content support, Digital PR
AnswerCraft is a remote specialist agency. For AEO, Answercraft focuses on technical clarity and structured content improvements, which are important when you want your pages to be selected as answers.
16. Brainlabs
Location: New York, NY, US
Size: 501 to 1,000 employees
Strengths: SEO, paid search, paid social, programmatic, CRO, analytics, AI SEO
Brainlabs is positioned around performance marketing with strong testing and measurement. This approach can suit AEO when brands want to trial content formats, refine page structure, and track visibility across different search experiences.
17. WebFX
Location: Harrisburg, Pennsylvania, US
Size: 501 to 1,000 employees
Strengths: SEO, web design, content, ecommerce, conversion optimisation, reporting
WebFX is a large agency with wide delivery capability and structured service lines. For AEO, that can help organisations that need consistent improvements across many pages, supported by reporting and ongoing optimisation.
18. SmartSites
Location: Paramus, New Jersey, US
Size: 201 to 500 employees
Strengths: SEO, PPC, web design and development, content support, digital strategy
SmartSites combines marketing services with site delivery. This can matter for AEO because many improvements require changes to templates, page structure, internal linking, and on-site content presentation.
19. OuterBox
Location: Akron, Ohio, US
Size: 201 to 500 employees
Strengths: ecommerce SEO, paid search, ecommerce web design, email marketing, conversion support
OuterBox is known for ecommerce-focused delivery. For AEO, ecommerce brands often need clearer category content, better product information structure, and supporting content that helps answer comparison and decision-making queries.
20. Go Fish Digital
Location: Raleigh, North Carolina, US
Size: 201 to 500 employees
Strengths: SEO, paid media, Digital PR, content marketing
Go Fish Digital is positioned around SEO and brand authority, supported by Digital PR. That can be valuable for AEO, where credibility signals and brand presence can influence whether content is selected and referenced in answers.
Conclusion
Answer Engine Optimisation is becoming a core part of organic search strategy as users rely more on AI-driven tools to get direct answers rather than lists of links. Choosing the right agency means finding a partner that understands both how traditional SEO foundations support AEO and how content, structure, and authority influence whether a brand is selected as the answer.
The agencies listed here reflect a range of approaches, from specialist SEO teams to large performance-led organisations, each suited to different business needs. As answer-led experiences continue to shape how information is surfaced, investing in AEO now can help brands protect visibility, build trust, and remain present at the point where decisions are increasingly influenced.