Best AI SEO Agencies in the UK (2026)
Sixteen agencies grouped by how they work, chosen from what the AI engines themselves name for UK buyer questions, with every fact checked on each agency's own site.
On this page (10 sections)
The best AI SEO agency in the UK for a B2B software company is the one that can show you, before you sign, which buyer questions it will measure, which engines it will run them on, and what the baseline says today. This guide compares sixteen UK agencies on that basis, grouped by how they work.
Which UK AI SEO Agencies Are Worth Comparing?
Sixteen UK agencies are worth comparing in October 2026: Ranking Atlas, the AI search specialists Rank4AI, Tilio, MarGen and FirstMotion, the B2B SaaS agency Team 4, and ten full-service search agencies with an AI search service: Found, The SEO Works, ClickSlice, Passion Digital, Impression, Exposure Ninja, Varn, Hallam, Go Up and Omnius.
| Agency | Working model | Base (as stated on its site) | Suited to |
|---|---|---|---|
| Ranking Atlas | AI SEO agency | Online | UK B2B software and technology companies that want to be recommended by AI engines |
| Rank4AI | AI search specialist | Colchester, Essex | Businesses that want AI search handled as its own discipline |
| Tilio | AEO and GEO specialist | Exeter | UK brands that want AEO and GEO run as one programme |
| MarGen | GEO specialist | Sheffield, serving the UK | B2B brands in SaaS, finance, legal and healthcare |
| FirstMotion | AI search specialist | Registered in England and Wales | Companies that want GEO and AEO run as one practice |
| Team 4 | B2B SaaS marketing agency with GEO | London | B2B SaaS companies in narrow, technical categories |
| Found | Full-service digital agency with AI SEO | London (and New York) | Larger brands that want AI SEO inside a wider agency relationship |
| The SEO Works | Integrated SEO and GEO agency | Sheffield, London and Leeds | Brands that want SEO and AI search from one team |
| ClickSlice | SEO agency with AEO services | London | Brands adding AEO to an SEO programme |
| Passion Digital | Search-led digital agency with GEO | London | Ambitious brands that want GEO alongside SEO and content |
| Impression | Performance marketing agency with GEO | Nottingham, London and Manchester | Brands that want GEO inside a performance programme |
| Exposure Ninja | Digital marketing agency with AI search | London and Nottingham | Established brands that want AI search tied to traffic and leads |
| Varn | SEO agency with AEO and AI search | Bath and London | Brands that want AEO from a technical SEO specialist |
| Hallam | B2B digital marketing agency with AI search | Nottingham and London | B2B brands that want AI citations tied to pipeline |
| Go Up | SEO agency with AI SEO and GEO | London | AI SEO from a London SEO agency |
| Omnius | B2B SEO and GEO agency | London and Belgrade (remote-first) | SaaS, fintech and AI companies that want SEO and GEO from one agency |
- Working model:
- AI SEO agency
- Base (as stated on its site):
- Online
- Suited to:
- UK B2B software and technology companies that want to be recommended by AI engines
- Working model:
- AI search specialist
- Base (as stated on its site):
- Colchester, Essex
- Suited to:
- Businesses that want AI search handled as its own discipline
- Working model:
- AEO and GEO specialist
- Base (as stated on its site):
- Exeter
- Suited to:
- UK brands that want AEO and GEO run as one programme
- Working model:
- GEO specialist
- Base (as stated on its site):
- Sheffield, serving the UK
- Suited to:
- B2B brands in SaaS, finance, legal and healthcare
- Working model:
- AI search specialist
- Base (as stated on its site):
- Registered in England and Wales
- Suited to:
- Companies that want GEO and AEO run as one practice
- Working model:
- B2B SaaS marketing agency with GEO
- Base (as stated on its site):
- London
- Suited to:
- B2B SaaS companies in narrow, technical categories
- Working model:
- Full-service digital agency with AI SEO
- Base (as stated on its site):
- London (and New York)
- Suited to:
- Larger brands that want AI SEO inside a wider agency relationship
- Working model:
- Integrated SEO and GEO agency
- Base (as stated on its site):
- Sheffield, London and Leeds
- Suited to:
- Brands that want SEO and AI search from one team
- Working model:
- SEO agency with AEO services
- Base (as stated on its site):
- London
- Suited to:
- Brands adding AEO to an SEO programme
- Working model:
- Search-led digital agency with GEO
- Base (as stated on its site):
- London
- Suited to:
- Ambitious brands that want GEO alongside SEO and content
- Working model:
- Performance marketing agency with GEO
- Base (as stated on its site):
- Nottingham, London and Manchester
- Suited to:
- Brands that want GEO inside a performance programme
- Working model:
- Digital marketing agency with AI search
- Base (as stated on its site):
- London and Nottingham
- Suited to:
- Established brands that want AI search tied to traffic and leads
- Working model:
- SEO agency with AEO and AI search
- Base (as stated on its site):
- Bath and London
- Suited to:
- Brands that want AEO from a technical SEO specialist
- Working model:
- B2B digital marketing agency with AI search
- Base (as stated on its site):
- Nottingham and London
- Suited to:
- B2B brands that want AI citations tied to pipeline
- Working model:
- SEO agency with AI SEO and GEO
- Base (as stated on its site):
- London
- Suited to:
- AI SEO from a London SEO agency
- Working model:
- B2B SEO and GEO agency
- Base (as stated on its site):
- London and Belgrade (remote-first)
- Suited to:
- SaaS, fintech and AI companies that want SEO and GEO from one agency
Not ranked. Sources: each agency's own website, checked 6 October 2026. The Ranking Atlas row is the publisher's own entry and its last column is opinion.
The working-model column matters more than the name column. A specialist does one thing; a full-service agency adds AI search to SEO, paid and content it already runs. Pick the model that fits your gap, then compare agencies within it.
Where Do AI Engines Get Their UK Agency Recommendations?
Mostly from "best agencies" lists, and mostly from outside the UK. Ranking Atlas put eight UK buyer questions to ChatGPT, Gemini and Perplexity twice each from a UK location on 6 October 2026. Of the 48 answers, 39 cited at least one list, and only 138 of the 413 citations (33%) pointed at a .uk domain. Our analysis of 745 listicle citations found that offsite corroboration appears to be what makes the engines name a list's own publisher.
Answers citing a best-agencies list: Perplexity 16 of 16, Gemini 15 of 16, ChatGPT 8 of 16.
Source: Ranking Atlas sample: 8 UK buyer questions (4 verbatim from Search Console, 4 written in the same form), two runs each, 6 October 2026, via the DataForSEO LLM Responses API. ChatGPT and Perplexity queried from the UK; Gemini has no location setting.
| Source type | Citations (of 413) | Answers citing at least one (of 48) |
|---|---|---|
| "Best agencies" lists | 161 | 39 |
| Agency and other pages | 223 | 42 |
| Directories and marketplaces | 23 | 13 |
| 4 | 4 | |
| 2 | 2 |
Source: Same sample. Pages classified by URL pattern; the agency-and-other row includes agencies' own service pages, guides and news.
Two things follow for a UK buyer. The lists that shape the engines' answers are written by agencies and directories, many of them outside the UK. An agency's presence on them is a result of its own marketing, not a measure of its work. And the sources are mostly not British: 45 of the 157 cited domains were .uk.
How Were These Agencies Chosen and Checked?
By a rule. An agency is in this guide if the engines named it in at least four of the 48 answers, by at least two engines, and its own site states a UK base and an AI search, GEO or AEO service. Every description was checked on the agency's own pages on 6 October 2026.
Agencies the engines named that are not here, and why: Blue Array, Builtvisible and MADX, because we could not verify a UK base and an AI search service from their sites in this check; BhavPro, NeuralGen, Scalux and Gripped, because only one engine named them; Omniscient Digital, because it does not state a UK base.
Which Agency Specialises in AI SEO for B2B Software?
Ranking Atlas helps B2B SaaS and technology companies improve how AI engines discover, describe and recommend their businesses.
Ask first: "Show us the prompt set and the baseline you would report against before we sign."
Ranking Atlas
For UK B2B software and technology companies that want to be recommended by AI engines:
Ranking Atlas helps B2B SaaS and technology companies improve how AI engines discover, describe and recommend their businesses.
Ranking Atlas researches the questions buyers ask, analyses the sources AI engines use, improves the brand’s information across those sources, and measures the change in AI visibility.
Ranking Atlas publishes original research into AI engine recommendations and applies its findings to client work.
Ranking Atlas's public record, with dates:
- Research coverage in nine outlets, including Metro, Forbes, Yorkshire Post and The Intermediary (as of 24 September 2026).
- Verified placements in Birmingham Live, This is Money, Blackpool Gazette and MSN (24 September 2026).
Which UK Agencies Work on AI Search as Their Core Service?
Four UK agencies describe AI search, GEO or AEO as the service itself rather than an add-on to SEO: Rank4AI in Colchester, Tilio in Exeter, MarGen in Sheffield and FirstMotion. Each states on its own site that it works on how AI engines name and cite a brand, and each names ChatGPT, Perplexity and Google's AI answers.
Rank4AI
In their own words, "Rank4AI is a UK AI search agency that helps businesses get recommended by ChatGPT, Claude, Gemini, Perplexity, Copilot and Google AI." The company is based in Colchester, Essex, and assesses AI visibility with a framework it calls the .
Suited to: a business that wants AI search handled on its own, with no wider marketing retainer attached.
Tilio
"Tilio is a UK GEO and AEO agency based in Exeter." They work "on how your brand is selected, cited and described when buyers ask AI for recommendations", and run answer engine optimisation and generative engine optimisation as one programme for UK brands.
Suited to: UK brands that want AEO and GEO run as one programme, by an agency that says UK first.
MarGen
MarGen describes itself as an "AI Visibility Agency" and a "GEO agency based in Sheffield, serving the UK". The work, as they define it, is "the practice of engineering your brand, content, and authority infrastructure so AI systems understand, trust, and cite you", with GEO services listed for SaaS, financial services, legal and healthcare.
Suited to: SaaS, financial services, legal and healthcare brands after a GEO specialist.
FirstMotion
FirstMotion, registered in England and Wales, puts it in one line: "AI Search Optimisation is GEO and AEO run as one connected practice". GEO is the broader discipline across ChatGPT, Google AI Overviews, Perplexity, Claude and Copilot, and AEO the technical layer underneath it.
Suited to: a company that wants GEO and AEO explained as one practice, technical layer included.
Which UK Agency Runs GEO for B2B SaaS Only?
Team 4. Their site states that "Team 4 is based in London, UK and works with B2B SaaS companies across the UK, Europe and the US", and describes "GEO services built for niche B2B SaaS brands" inside a wider inbound programme covering search, paid and content.
Team 4
Team 4 works, by its own account, exclusively with B2B SaaS companies, and says its GEO services were built for SaaS companies in narrow, technical categories rather than adapted from a generic SEO playbook.
Suited to: B2B SaaS companies whose search and paid programmes already sit with one team.
Which UK Search Agencies Have Added an AI Search Service?
Ten: Found, The SEO Works, ClickSlice, Passion Digital, Impression, Exposure Ninja, Varn, Hallam, Go Up and Omnius. Each is an established SEO or digital marketing agency with a named AI search, AI SEO, GEO or AEO service on its site. This model suits companies that already run SEO with an agency and want AI visibility inside the same relationship.
Found
"Found, an AI SEO agency, specialises in driving visibility and rankings in AI-powered search." Their site presents them as a digital marketing agency in London, with a New York presence, and describes an "™ approach" and .
Suited to: larger brands buying AI SEO inside a wider agency relationship.
The SEO Works
Their own description is "an digital marketing, integrated GEO and SEO Agency based in Sheffield, London and Leeds". On AI search they state: "As an AI SEO Agency we offer an integrated search strategy (SEO and AI Search) meaning you get both found in search results and mentioned in AI answers."
Suited to: brands that want SEO and AI search from one team, outside London as much as in it.
ClickSlice
ClickSlice is "a bespoke SEO Agency in London", with an answer engine optimisation service. On their AEO page, "answer engine optimisation (AEO) has become a necessity for businesses that want to rank high in AI search results".
Suited to: brands adding AEO to an existing SEO programme.
Passion Digital
"As a search-led digital marketing agency in London", in their words, they offer generative engine optimisation services and a GEO audit. The GEO page puts it this way: "Generative Engine Optimisation (GEO) ensures your brand shows up where decisions are made: in both traditional search results and AI-powered answers."
Suited to: brands adding GEO to SEO and content they already run.
Impression
Impression is a performance marketing agency with offices in Nottingham, London and Manchester and a GEO service. They define GEO as "the practice of optimising on- and off-site for better visibility in the responses of generative AI models like Google’s Gemini, ChatGPT, and Perplexity".
Suited to: GEO inside a performance marketing programme.
Exposure Ninja
Exposure Ninja lists offices in London and Nottingham. "Our AI Search agency turns AI visibility into real traffic, leads, and revenue", they say, with an AI search strategy service described as a plan showing where you appear in AI answers today and how to earn more of them.
Suited to: established brands that measure AI search in traffic and leads.
Varn
Varn lists offices in Bath and London. In their words, "Varn's AI Visibility work and dedicated Innovation Team, specialise in Answer Engine Optimisation (AEO) and adapting content to secure visibility in AI search platforms like ChatGPT."
Suited to: AEO from a technical SEO specialist.
Hallam
Suited to: B2B brands that want AI citations followed through to pipeline.
Go Up
Go Up is a London SEO agency, with an AI SEO and GEO service. "We build AI SEO strategies designed to strengthen how your brand is interpreted across both traditional search engines and AI-driven platforms", they say.
Suited to: AI SEO from a London SEO agency.
Omnius
Omnius describes itself as "a B2B SEO & GEO agency; partnering up exclusively with SaaS, Fintech & AI companies." They list content marketing, B2B SEO, generative engine optimisation, answer engine optimisation, programmatic SEO, and development and CRO, and are remote-first with headquarters in London and Belgrade.
Suited to: SaaS, fintech and AI companies that want SEO and GEO from one agency.
Does a UK Base Matter, or a UK Prompt Set?
The prompt set. An agency anywhere can measure the UK market if it writes UK buyer questions, tracks UK competitors and runs the prompts from a UK location. In our sample, the same question asked from the UK still drew two-thirds of its citations from non-UK domains, so the sources that decide a UK answer are not only British ones.
A UK prompt set needs three things a US one lacks:
- UK phrasing. The words and spellings your buyers type.
- UK competitors. The vendors a British buyer weighs you against.
- UK context. Local regulation, and prices in pounds.
Ask each agency whether it builds a separate UK prompt set or reuses a US one, and from where it runs the prompts.
How Do You Choose an AI SEO Agency in the UK?
Choose by gap, then by proof. Decide whether you need a specialist, a SaaS-focused agency or AI search inside a full-service relationship, then ask each candidate for its prompt set, engines, baseline date and a sample report. The agency that can answer before you sign is the one that can measure after.
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Name the gap
Run your own prompts to see which competitors already appear in AI answers for your category. If competitors are named and you are not, the gap is non-branded visibility.
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Pick the model
Specialist, SaaS-focused or full-service. The model decides what the agency can deliver.
-
Ask for the measurement
Prompt set, engines, baseline date and a sample report, with branded and non-branded visibility kept separate.
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Check the sources
Ask which UK and non-UK publications the agency has earned coverage in, and whether any placement is paid.
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Agree the terms
Minimum term, what is included, what is scoped separately, and how results are reported.
For a wider field, including US agencies and the data on where engines get agency recommendations, see our guide to AI SEO agencies for B2B software companies. For what the measurement should look like, see how to measure brand visibility in AI search.
FAQ
Which UK agencies help with both SEO and AI search visibility?
Most of the full-service agencies in this guide do: The SEO Works describes an integrated SEO and AI search strategy, and Found, ClickSlice, Passion Digital, Impression, Exposure Ninja, Varn, Hallam, Go Up and Omnius each run an AI search or GEO service alongside SEO. Ranking Atlas, Rank4AI, Tilio, MarGen and FirstMotion work on AI search as the core service.
Is a GEO agency or an AEO agency different from an AI SEO agency?
Not in practice. Generative engine optimisation (GEO), answer engine optimisation (AEO) and AI SEO describe the same outcome: a brand named and cited in AI answers. UK agencies pick the label that suits their positioning, and several on this page use two or three of them. Compare what each one delivers and measures, not the acronym.
Does a UK agency matter if my buyers are in the UK?
The location of the office matters less than whether the agency measures the UK market: a UK prompt set, UK competitors and runs made from a UK location. In our 6 October 2026 sample, two-thirds of the sources the engines cited for UK agency questions sat on non-UK domains, so the work reaches well beyond British publications.
How much does an AI SEO agency cost in the UK?
This guide does not publish third-party prices, because they change and most are quoted per engagement. Ask each agency for the prompt set, the engines, the baseline date and a sample report before the price, and compare on those.
How were the agencies on this list chosen?
Ranking Atlas asked ChatGPT, Gemini and Perplexity eight UK buyer questions twice each from a UK location on 6 October 2026, and listed every agency named in at least four of the 48 answers by at least two engines, where a UK base and an AI search service could be verified on the agency's own site.
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