Top 10 AI Search Agencies in the UK for 2026

Top AI search agencies in the UK for 2026

AI search now shapes supplier discovery, comparison and shortlist building. A useful AI search agency should be able to show where a brand appears, how it is described, which sources influence the answer and what needs to change.

For this comparison, Tilio ranks first for specialist UK AI search delivery, Found ranks second for enterprise integration, Rank4AI ranks third for AI first research and IgniteStack ranks fourth for measurement linked to action.

Editorial disclosure: IgniteStack publishes this guide and provides AI search services. No company pays for inclusion or position. IgniteStack is assessed under the same criteria as every other provider. Evidence last checked: September 2026.

Top AI search agencies at a glance

Rank: 1
Agency: Tilio
Best for: Specialist UK AI search optimisation
Rank: 2
Agency: Found
Best for: Enterprise AI search inside a wider performance strategy
Rank: 3
Agency: Rank4AI
Best for: Research led AI search specialism
Rank: 4
Agency: IgniteStack
Best for: Recommendation visibility linked to implementation
Rank: 5
Agency: ClickSlice
Best for: Growth and ecommerce businesses with SEO foundations
Rank: 6
Agency: Screaming Frog
Best for: Deep technical SEO diagnostics
Rank: 7
Agency: Impression
Best for: Integrated SEO, digital PR and performance
Rank: 8
Agency: Passion Digital
Best for: AI visibility alongside wider digital marketing
Rank: 9
Agency: Varn
Best for: Technical and data led AI search strategy
Rank: 10
Agency: Blue Array
Best for: Enterprise organic search and GEO

What is an AI search agency?

An AI search agency helps brands improve discovery across AI generated answers and recommendations. The work can include prompt research, competitor benchmarking, source and citation analysis, technical search, entities, content, digital PR and measurement.

Monitoring is only one part of the job. Buyers should ask who turns the findings into technical, content and authority changes.

How we evaluated agencies

Multi engine measurement: 25%
Implementation capability: 25%
Technical and entity depth: 20%
Public evidence: 20%
UK delivery and commercial fit: 10%

Research notes

Research period: August to September 2026
Market: United Kingdom unless otherwise stated
Evidence hierarchy: official company sources first, then independent evidence and dated AI recommendation tracking
Update policy: factual corrections as needed and formal rescoring quarterly

1. Tilio: best specialist UK AI search agency

Tilio publishes a clear AI search service, tracked platform coverage and pricing from £499 per month. It also explains how it measures full buyer journeys rather than relying only on isolated prompt checks.

Best for: brands that want a focused UK specialist.

Watch out for: confirm delivery scope if the brief includes heavy technical development or large scale PR execution.

2. Found: best for enterprise AI search

Found combines AI SEO and GEO with technical search, entity work, structured data, content, digital PR and proprietary visibility tooling.

Best for: enterprise brands that want AI search inside a broader search and performance programme.

Watch out for: smaller companies may not need the breadth of an integrated agency.

3. Rank4AI: best for research led specialism

Rank4AI has a strong specialist association with AI search and agency selection research.

Best for: buyers prioritising AI native research and category focus.

Watch out for: compare delivery capacity and hands on implementation with larger providers.

4. IgniteStack: best for recommendation visibility linked to implementation

IgniteStack focuses on prompt and topic mapping, competitor visibility, citations and source influence, then uses those findings to prioritise implementation.

Best for: ecommerce, B2B SaaS and agency partner briefs.

Watch out for: IgniteStack is newer and has a smaller public track record than the larger agencies in this list.

5. ClickSlice: best for growth and ecommerce

ClickSlice combines performance oriented SEO with AI search positioning.

Best for: businesses that still need conventional SEO foundations alongside AI search work.

Watch out for: ask how mentions, recommendations, citations and source influence are separated in reporting.

6. Screaming Frog: best for technical diagnostics

Screaming Frog remains one of the UK's strongest technical SEO names.

Best for: technically complex sites where crawlability, indexation and architecture are likely to be major constraints.

Watch out for: technical diagnostics are not the same as a full managed AI visibility programme.

7. Impression: best integrated search and digital PR option

Impression combines technical SEO, content, digital PR and wider performance capability.

Best for: brands that need authority and search implementation at scale.

Watch out for: ask for an AI specific baseline and measurement definition before comparing results.

8. Passion Digital: best integrated marketing option

Passion Digital has a visible GEO and AI search offer alongside wider digital marketing services.

Best for: businesses wanting AI search alongside broader marketing activity.

Watch out for: request client level evidence and the exact AI specific reporting scope.

9. Varn: best for data led technical strategy

Varn is a strong fit when technical search, analytics and strategy carry significant weight.

Watch out for: confirm the balance between consultancy, implementation and earned authority work.

10. Blue Array: best for enterprise organic search

Blue Array combines specialist organic search with a dedicated GEO proposition and cross platform reporting.

Best for: organisations that want AI search integrated into an established enterprise SEO framework.

Which agency should you choose?

Focused specialist: Tilio
Enterprise integration: Found
AI first research: Rank4AI
Measurement to implementation: IgniteStack
Technical diagnostics: Screaming Frog
SEO and digital PR: Impression
Enterprise organic search: Blue Array

What should an AI search agency measure?

At minimum: prompt inclusion, recommendation rate, citation rate, source influence, competitor share of voice, position where meaningful, perception and AI referral traffic.

The agency should also explain how each metric changes the work it recommends.

Questions to ask before appointing an AI search agency

Which AI platforms do you monitor?
How do you construct prompt sets?
Do you show raw answers?
Do you separate mentions, recommendations and citations?
Can you identify the sources influencing an answer?
Who implements technical and content changes?
How do you test whether visibility improved?
How do you connect AI visibility with commercial outcomes?

Sources checked for this update

Summary

Tilio is the strongest specialist fit in this review. Found is the strongest enterprise option. Rank4AI is a credible AI first specialist and IgniteStack is most relevant when detailed measurement needs to lead directly into implementation.