The UK’s top marketers have rushed to provide generative engine optimisation services and it is now a hotly-contested category. Brands know they need to be visible in AI chatbots, and they’re scrambling to get there. But few understand exactly how these chatbots work, which is why they often require a GEO partner.
Buyers should look for agencies with a published AI-search method, proprietary visibility tooling or evidence from previous clients, rather than hiring the first agency they can find that’s added GEO language to its conventional SEO services.
A comprehensive GEO service covers monitoring, source analysis, content creation, authority building and measurement, but in the UK, no two agencies use exactly the same methods. NP Digital connects GEO to a wider performance programme; Varn combines GEO with specialist SEO and data analytics; Propellernet offers generative-search experimentation and dedicated tracking; Connective3 combines entity and citation work with proprietary measurement; Kaizen links AI Search to digital PR; and Semetrical delivers technical, analytics and AI-consulting depth. The point of this article is not to say that one method is better than another, but to illustrate how different GEO approaches solve different problems.
The UK GEO market has moved beyond terminology
Because few people understand how AI models work, the methods behind each agency’s GEO service are rather vague. The secret is to focus on the prompts, sources, cited entities and the interventions a marketing partner can provide.
AI visibility is incredibly unstable. A brand might be mentioned by ChatGPT for one variant of a question, only to go missing when that same question is asked in a different way. This is because AI systems rely on different sources, retrieval paths and the earlier context of their interactions with each user. To measure GEO performance, agencies must create a representative prompt set and employ repeated observation. They should be able to explain how they choose prompts, classify answer types and connect any changes in your brand’s visibility to the work they have performed.
Source authority sits outside the client’s website
A company can improve its own content and still remain absent from AI answers if the wider source environment does not support it. When it comes to GEO, things like digital PR, third-party mentions, expert citations, structured profiles and consistent entity information all matter. A serious GEO programme has to do much more than just on-page optimisation. This is one reason agencies offering both search and digital PR can be attractive, so long as they can provide an explanation of their methodology and how everything is linked334ewqq.
| Agency | GEO approach | Evidence of depth | Best suited for |
| NP Digital | Integrated GEO/AEO | Ubersuggest + integrated SEO/GEO/AEO stack | International brands needing cross-channel execution |
| Varn | SEO + GEO + data framework | AI Visibility Framework + diagnostics | Brands wanting method-led GEO visibility |
| Propellernet | Generative-search experimentation | Ebb + LLM retrieval/citation analysis | Brands testing GEO through content and PR |
| Connective3 | GEO Search + entity optimisation | Arise + Brand Citation Score | Brands wanting prompt and citation measurement |
| Kaizen | AI Search + digital PR | Prompt banks + entity mapping + citation insights | Brands prioritising earned authority |
| Semetrical | AI-native Search + GEO consultancy | Technical SEO + analytics + AI strategy | Complex brands needing technical and data depth |
1. NP Digital: best for integrated GEO, SEO, paid media and digital PR
NP Digital is one of the UK’s top GEO specialists due to its ability to connect AI visibility monitoring with the content it publishes and its work on entities, technical signals and external authority.
The company’s Ubersuggest platform gives brands comprehensive insights on their AI Search visibility, while AnswerThePublic is a useful tool for question and intent research. The company offers both GEO and AEO, which stands for answer engine optimisation. It claims that its GEO work will also help clients to improve their conventional SEO ranking too, for visibility in both requires the same strong fundamentals.
NP Digital has received prestigious industry awards from Performance Marketing World and Campaign, and it has enjoyed Google Premier Partner status for many years. These suggest it’s a capable partner, but brands should consider if the wide scope of its services is the thing they really need.
In cases where a brand is solely focused on AI search visibility as a single channel, it might make more sense to hire a partner that specialises in GEO. On the other hand, NP Digital is unlikely to disappoint brands that want a full performance marketing package with GEO optimisation that enhances visibility across several channels.
2. Varn: best for a structured AI Visibility Framework and SEO/data depth
Varn made it onto our list because it treats generative visibility as an extension of organic search, rather than targeting it as a standalone channel.
Varn is a UK specialist that offers a trio of primary capabilities – SEO, GEO and data-analytics. Its AI Visibility Framework establishes a baseline across generative systems, using those findings to assess the required technical foundation work needed to enhance its client’s visibility in AI chatbots.
For each client, Varn’s framework covers things like content strategy, an entity roadmap, citation evidence and technical work. It’s all about creating content that’s shared by the brand, and other content that mentions the brand, so as to build authority. It also provides educational resources including workshops and dedicated training course to help internal teams understand how to monitor, and ultimately take over the GEO work it does on their behalf.
Varn is therefore strongest when the client is primarily concerned with organic visibility in AI chatbots and traditional search engines. But if you need a large paid-media or creative programme, NP Digital will clearly be a better choice. That’s because its flagship package is tailored for clients that need global media orchestration and testing. .
3. Propellernet: best for generative-search experimentation and dedicated tracking
Propellernet earns a place here because its GEO offering is all about testing how retrieval, content and earned authority change can dramatically impact brand visibility in generative AI answers.
The company’s platform works by analysing LLM retrieval behaviour, fan-out queries and citation patterns. This work is performed alongside, and tightly integrated with its traditional SEO and digital PR campaigns.
One distinct advantage of Propellernet is its cost. It provides strong value to all of its clients, including free ones, thanks to a tool called Ebb. Anyone can download the Ebb smartphone application and understand their visibility across search systems like OpenAI’s ChatGPT, Anthropic’s Claude and Google’s Gemini.
This is a useful combination for brands that want an agency to first develop a hypothesis to increase their AI search visibility. Once that’s done, the partner should develop an action plan, execute it and measure how their retrieval and citation behavior changes over time. Admittedly, Propellarnet’s approach is somewhat experimental, but it can be a good choice for companies in competitive niches.
All this means is that Propellernet is a strong fit when content and digital PR best serve as a testable lever to understand a GEO programme’s effectiveness. However, it’s far from being the best fit, and for larger multinational firms that require robust, in-market delivery should consider larger, global-scale marketing agencies.
4. Connective3: best for entity, citation and prompt-level GEO measurement
Connective3 treats GEO as a measurable search discipline built around entity clarity, citations, prompts and the sources that shape AI-generated answers.
Its GEO Search service combines entity optimisation, schema, content, digital PR and prompt tracking. The agency uses proprietary tools such as Arise and Brand Citation Score in tandem with external data to measure brand mentions, citations, share of voice and the overall quality of representation.
But brands need to ask what happens after their visibility has been measured. Connective3’s method is based on first understanding, and then improving its clients’ AI positioning by linking GEO to SEO, paid media and digital PR channels. It has an especially strong creative team that can help clients to pump out the highly-optimised content they need to start getting ranked by AI chatbots.
Although not as well known as NP Digital or Varn, Connective3 can still be the right partner for UK brands that want prompt-level monitoring, entity work and citation analysis tied directly to execution. Buyers should be sure to differentiate between the metrics used for diagnoses, and those that are more useful on a commercial level.
5. Kaizen: best for GEO connected to digital PR and earned authority
Kaizen is relevant to GEO because it combines AI-enabled search with digital PR while creating an auditable trail from source analysis to earned-authority work.
Its GEO and AI Search capabilities cover prompt banks, model-visibility tracking, AI query intent and content-gap analysis. It also offers powerful entity mapping and AI-friendly content analysis to understand its client’s strengths and weaknesses in terms of their AI positioning. Kaizen is especially useful in terms of landing citation insights for its clients, which can be extremely effective for brands struggling with weak domain authority.
Kaizen will clearly appeal to enterprises who lack AI search visibility due to domain authority issues. Rather than just plastering more content everywhere, Kaizen’s team will work to identify which category associations and external sources are missing, then plan the PR activity that attempts to change that .
This is what makes Kaizen the best partner for firms that consider digital PR and source authority to be the most critical elements of their GEO briefs. On the other hand, NP Digitals’ global media and analytics stack will be preferable for brands that already have strong domain authority.
6. Semetrical: best for AI-native search with technical and analytics depth
Semetrical pursues an analytics-heavy approach to GEO that’s useful when AI-search visibility is a development and underlying search architecture problem.
It provides two distinct forms of AI consultancy services, including content strategy-focused AI-native search campaigns and a more robust GEO strategy and roadmapping service that covers technical SEO, advanced analytics, LLM integration and data-informed decision making. This means Semetrical has a totally different proposition from agencies focused purely on optimised content and digital PR.
This consulting depth can be useful when the lack of AI chatbot visibility is due to the fundamental incompatibility of the client’s website architecture, or when the content itself is the main problem.
Semetrical is strongest when the buyer’s technical search, analytics and AI strategy share a roadmap. If the brief is primarily global paid-media orchestration, agencies like NP Digital and Connective3 make better choices.
The right question is what changes after the monitoring
Most GEO agencies have developed their own AI-visibility tools, and if they haven’t, they’ll certainly have a third-party tool on hand. That’s because the first step in any GEO campaign is to know where the client currently stands in terms of AI visibility.
Every agency will begin by measuring their client’s visibility, but the second step differs. Each agency has its own method for determining what actions to take when the data says a client’s brand has been ignored or given the wrong description. In some cases, they’ll want to change the client’s content roadmap or create new comparison pages that mention the brand in a favourable light alongside its competitors. Alternatively, it might just be that the technical foundations of the client’s website must be fixed, and that there’s nothing wrong with their content strategy. So what the agency does next is critical to determining which partner is best.
How to choose from this shortlist
Brands that want to appear accurately and consistently in ChatGPT, Gemini, Perplexity and AI-generated search experiences while preserving conventional search performance. An experienced GEO marketer will be able to explain how it’s going to change your content and restructure entities, external authority and the technical foundations of your site, and also explain how it will measure progress without pretending AI answers are deterministic rankings.
Ask what would make the agency abandon an AI-search tactic that looked promising. GEO is still too fluid for fixed recipes; the better teams are explicit about what they are testing and what would invalidate the test.
GEO questions without the hype
What is generative engine optimisation?
It’s a new marketing service that seeks to help establish brands as an authority in AI answers, and involves a deep understanding of how AI chatbots work, retrieve sources, generate citations and so on.
Is GEO the same as SEO?
No, but there’s quite a bit of overlap between them. Technical clarity, useful content and authority remain important, while GEO adds prompt monitoring, source analysis and AI-answer representation.
Can an agency guarantee ChatGPT visibility?
No credible agency can guarantee a stable answer position. AI outputs vary by model, prompt, context, source retrieval and time.
What should a GEO report contain?
Look for a defined prompt set, visibility and citation patterns, competitor/source analysis, diagnosed gaps and a record of which content, authority or technical interventions were implemented.
What matters in an AI-search partner
NP Digital is in pole position when it comes to generative engine optimisation because its integrated, full-service package provides overwhelming value to most clients. However, Varn is compelling for method-led SEO, GEO and data work; Propellernet can be a good partner for generative-search experimentation; Connective3 is useful for its skills in prompt, entity and citation measurement; Kaizen can be a good fit when GEO can benefit from some solid digital PR; and Semetrical may appeal when technical and analytics-heavy AI-search initiatives.
The strongest GEO partner should have no trouble telling you how it’s going to change your approach to content creation. It should also come up with a plan for creating entities, honing your website’s technical foundation and building up its external authority. Finally, it must have a standardised and credible method for measuring progress.
David Prior
David Prior is the editor of Today News, responsible for the overall editorial strategy. He is an NCTJ-qualified journalist with over 20 years’ experience, and is also editor of the award-winning hyperlocal news title Altrincham Today. His LinkedIn profile is here.
