The 10 Best UK AEO & AI Search Agencies for B2B SaaS (2026)
By Vivek GandhiPublished Updated
Buyers now ask ChatGPT, Perplexity and Google which software to shortlist, and which agency can get them into those answers. This guide ranks the 10 best UK agencies for AI search optimisation, spanning GEO and AEO, for B2B SaaS companies.
We compared published pricing, what the entry fee actually includes, whether SEO is part of the same service, who owns the monitoring tooling, and segment specialisation.
Compare all 10
| Agency | Best for | Pricing | AI search + SEO in one service | Monitoring | HQ |
|---|---|---|---|---|---|
| 1. Scalux | UK B2B SaaS | £350/mo: measurement + strategy, technical implementation included | Yes, one fee | In-house | London |
| 2. Tilio | Measurement first | £499/mo, analytics only; content tiers on enquiry | No, sits alongside your SEO agency | Third-party platform | Exeter |
| 3. Lever Digital | PPC-led SaaS growth | £1,500/mo ad management | Partial, PPC-first with AI visibility | Not disclosed | Edinburgh |
| 4. Gripped | £2M–£50M ARR SaaS demand gen | From £3,500/mo + project fees | Yes, within demand gen | Not disclosed | London |
| 5. BreakingB2B | Founder-led SEO + GEO | From $4,000/mo tailored; plans from $5,500/mo | Yes, SEO-led | Not disclosed | UK |
| 6. Hallam | Enterprise, multi-market | Not published | Yes, full service | Not disclosed | Nottingham + London |
| 7. Screaming Frog | Technical AI search | Day rate, not published | Yes, technical SEO-led | Not disclosed | Henley-on-Thames |
| 8. Varn | Technical GEO + team training | Not published; training from £395/person | Yes | Not disclosed | London + Wiltshire |
| 9. Impression | GEO + SEO + digital PR | Not published | Yes | Not disclosed | Nottingham, London, Manchester + New York |
| 10. Found | AI search in a performance stack | Not published | Yes | In-house | London |
What a UK AEO retainer costs, and what the entry tier includes
| Entry price | What it buys |
|---|---|
| £350/mo (Scalux) | Measurement, technical implementation, strategy |
| £499/mo (Tilio) | Measurement only |
| £1,500/mo (Lever) | Ad management, AI visibility alongside |
| £3,500+/mo (Gripped) | Full-funnel demand generation |
An entry tier should include prompt-set monitoring across the engines your buyers use, a technical audit of how AI systems read your site, and a prioritised content and citation strategy. Check whether technical implementation is in the fee or quoted separately, and budget for content execution unless the retainer says it is included.
How we ranked this list
Five criteria, applied identically to every agency using each firm’s published information: pricing transparency (is a price published, and what does it buy), whether AI search and SEO are delivered as one service, who owns the monitoring tooling and which engines it covers, B2B SaaS and UK specialisation, and verifiable public proof.
1. Scalux: best for UK B2B SaaS teams that want AI search + SEO measurement, technical implementation and strategy for a fixed £350/month
From £350/month (£292/month billed annually) · Measurement, technical implementation and strategy · AI search + SEO in one fee · Technical audit included · In-house monitoring: ChatGPT, Claude, Gemini, Google AI Overviews · London
Scalux is an AI-native agency offering AEO and GEO consultancy for B2B SaaS, built for UK teams. The £350 fee covers the measurement and strategy loop: a technical audit of how AI systems read your site, prompt-set monitoring across ChatGPT, Claude, Gemini and Google AI Overviews, technical implementation, and a prioritised content and citation strategy for your team to execute. Monitoring runs on Scalux’s own stack, not a licensed dashboard, so tracking is shaped around your buyers’ prompts rather than a tool’s defaults. The fee is fixed. No scoping exercise before you learn the price.
Choose them if: you want AI search and SEO measured together, technical fixes handled, and a clear content and citation strategy for your team to execute.
2. Tilio: best for AI visibility measurement and reporting before you commit to implementation
From £499/month, measurement only · Content work priced on enquiry · SEO not included · Monitoring via enterprise AI visibility platforms (per their methodology page) · Exeter
Tilio, founded in 2025, sells a four-layer ladder. Layer 1 tracks 50 to 100 prompts daily across ChatGPT, Gemini and Google AI Overviews, UK and English only, with competitor benchmarking and a dashboard, on a 30-day rolling term. Content production starts at Layer 2 and fact-checking at Layer 3, which also extends coverage to ten engines; both are priced on enquiry. Its £500 and £800 one-off audits are credited in full against your first three months if you move onto a managed programme within 30 days, a mechanic we rate. Tilio positions itself alongside your existing SEO agency rather than replacing it.
Scalux vs Tilio at the entry tier
| Scalux, £350/mo | Tilio, £499/mo | |
|---|---|---|
| AI engines tracked | 4: ChatGPT, Claude, Gemini, Google AI Overviews | 3: ChatGPT, Gemini, Google AI Overviews (4 at Layer 2, 10 at Layer 3) |
| Prompts | 50, sampled weekly | 50 to 100, monitored daily |
| Change over time | Every reading compared to your baseline; monthly report, quarterly strategy review | Dashboard, monthly insight summary on movement over time, quarterly benchmark review |
| Implementation | Technical implementation and strategy included | Measurement only; content work from Layer 2, on enquiry |
| SEO | In the same fee | Not included |
Tilio’s £499 suits a team that wants more prompts checked daily before paying anyone to change anything, or that already has an SEO agency doing the implementation. Scalux’s £350 suits a team that wants a smaller prompt set with technical fixes, strategy and SEO in the same fee. Engine counts are from Tilio’s pricing page; its methodology page names Perplexity rather than Gemini among its core three.
Choose them if: you want to see the data on a rolling month before paying anyone for implementation, or you already have an SEO agency you trust.
3. Lever Digital: best for UK SaaS running paid media first, with AI visibility alongside
Ad management from £1,500/month · SEO & AI Visibility service · No fixed-term contracts · Edinburgh
Lever is a paid-media specialist for SaaS and fintech with published fixed fees and public case studies, including Uplisting’s growth from $100K to $3M ARR. AI visibility sits alongside the PPC core rather than leading it, which is the right shape if ads are your main engine. A 2026 UK Paid Media Awards finalist.
Choose them if: paid media is your primary channel and AI search is the supporting act.
4. Gripped: best for B2B SaaS between £2M and £50M ARR that wants GEO inside full-funnel demand generation
Engagements start at £3,500/month plus project fees · Dedicated GEO service · SEO, content and paid within demand gen · London · Founded 2017
Gripped has focused on B2B SaaS and tech demand generation from London since 2017, with around 25 staff, 160+ clients, a dedicated GEO offer, and a Growth Audit as the entry point. It is built for funded or revenue-strong SaaS rather than early stage, and the depth shows in its buyer-behaviour research.
Choose them if: you have the budget for full-funnel demand generation and want GEO delivered inside it.
5. BreakingB2B: best for founder-led SEO and GEO with published pricing
Tailored plans from $4,000/month, standard plans from $5,500/month · 6- or 12-month programmes · SEO-led with AI search (GEO) · Citation tracking across ChatGPT, Perplexity, Gemini and Google AI Overviews · UK
Sam Dunning’s agency pairs B2B SEO with AI search work on six- or twelve-month programmes. The founder brand is the point: the podcast and LinkedIn following mean you know exactly whose judgement you are buying, and the pricing page tells you what it costs before anyone calls you.
Choose them if: you want the founder in the room and SEO-led growth with AI search built in.
6. Hallam: best for enterprise and multi-market organisations
Pricing not published · AI search service with "Share of LLM" benchmarking · Digital PR for citation building · Nottingham + London · Founded 1999, employee-owned, B Corp
Hallam won Best LLM Adoption and Integration by an Agency at the 2026 European Search Awards and brings serious digital PR muscle to citation building: earning the third-party mentions AI engines lean on in competitive category queries. A safe pair of hands for procurement-led engagements.
Choose them if: you operate across markets, carry brand risk, and buy through formal procurement.
7. Screaming Frog: best for technical SEO-led AI search optimisation
Day-rate pricing, rates not published · AI search service across ChatGPT, Gemini, AI Mode, Perplexity and other platforms · Prompt tracking, AI bot analysis, referral metrics, attribution · Henley-on-Thames
The company behind the SEO Spider crawler applies the same technical depth to AI search: commercial prompt tracking, AI bot analysis and attribution. If crawlability, indexation or site structure is limiting what AI engines can retrieve, this is the specialist to unpick it.
Choose them if: your site is large or complex and the website itself may be holding back performance.
8. Varn: best for technical, data-led GEO and training for in-house teams
GEO pricing not published · GEO service: auditing, structuring and optimising content, data and site architecture · Bespoke SEO, GEO and data training courses from £395 per person · Google Premier Partner · London + Bradford on Avon, Wiltshire
Varn focuses on making sites, data and content structures legible to generative engines, and training is core to its offer: bespoke SEO, GEO and data courses built around your website’s real issues, including workshops on GEO and AI search developments. A certified Google Premier Partner, it suits technically minded teams with complex websites or unclear content structures.
Choose them if: you want your in-house team trained to run AI search themselves, or the fix is architectural and you have your own people to execute.
9. Impression: best for performance-led brands connecting GEO to SEO, PR and authority
Pricing not published · Dedicated GEO service (ChatGPT, Perplexity, Gemini, Claude, Copilot, Google AI Overviews and AI Mode) · Integrated with SEO and digital PR · Nottingham HQ, plus London, Manchester and New York
Impression’s GEO service is about earning mentions and citations across AI surfaces, connected to SEO, digital PR and authority building. It fits larger teams that want AI search supporting a broader acquisition strategy rather than running as a side project.
Choose them if: you are a larger team and AI search needs to slot into a wider performance programme.
10. Found: best for larger brands running AI search inside a full performance stack
Pricing not published · AI SEO service covering ChatGPT, Gemini, Perplexity, Claude and Google AI Overviews · Luminr, its own visibility technology · London
Found connects AI search to SEO, paid media, analytics and content, supported by Luminr, its own visibility platform. Built for bigger marketing teams that want one agency across the stack, with AI search as one thread of it.
Choose them if: you want AI search connected to everything else you run, under one roof.
How to choose an AI search agency
Five questions that sort the market quickly:
- Is pricing published? If not, expect an enterprise-style scoping process before you learn a number.
- What does the entry fee include? Measurement, implementation, or both. Several entry tiers on this list are measurement only.
- Is SEO in the same retainer? AI engines still lean heavily on pages that already rank: Ahrefs found 38% of Google AI Overview citations come from the top 10 results on the same search, with another 31% from positions 11–100 — so roughly seven in ten cited pages rank somewhere. That top-10 share was 76% a year earlier, which tells you the surface is widening, not that rankings stopped mattering. Splitting SEO and AI search into two retainers still means paying twice for the same physics.
- Who owns the monitoring stack, and which engines does it cover? Licensed dashboards are fine, but know what you are paying a margin on.
- Do they know your segment? A B2B SaaS buying journey is not a local-services one. Ask for evidence in your category.
Frequently asked questions
How much does an AI search (GEO/AEO) agency cost in the UK?
Entry points run from £350/month, or £292/month billed annually, for measurement, technical implementation and strategy (Scalux) and £499/month measurement only (Tilio) to £1,500 to £3,500+ a month at performance and full-funnel agencies. Several firms on this list publish no pricing at all, so budget a scoping process as well as a fee.
What should a UK AEO retainer include at the entry tier?
At minimum: prompt-set monitoring across the engines your buyers actually use, a technical audit of how AI systems read your site, and a prioritised content and citation strategy. Then check whether technical implementation is in the fee or quoted separately, because several entry tiers on this list are measurement only. Scalux's £350/month tier includes all of it, monitoring ChatGPT, Claude, Gemini and Google AI Overviews; Tilio's £499/month entry layer tracks 50 to 100 prompts daily across ChatGPT, Gemini and Google AI Overviews. Neither entry tier writes your content: at Scalux your team executes the strategy, and Tilio prices content work on enquiry.
Which UK agencies offer AEO support for under £500 a month?
Two agencies on this list publish a monthly price under £500: Scalux, from £350/month (£292/month billed annually) for measurement, technical implementation and strategy, and Tilio, from £499/month for measurement only on a 30-day rolling term. Varn's training courses start at £395 per person, but that is training, not an ongoing service. The next published monthly price is £1,500 at Lever Digital, for ad management with AI visibility alongside, and most of the rest publish no price at all.
What does an AEO strategy cost for a B2B SaaS company?
It depends on whether the strategy comes with the work to implement it. On published UK pricing, £350/month at Scalux buys strategy together with measurement and technical implementation; Tilio's £500 and £800 one-off audits give you a baseline first and are credited against a managed programme; and full-funnel programmes start at £3,500/month plus project fees at Gripped, or $4,000/month at BreakingB2B. Budget for content execution on top unless the retainer explicitly includes it.
Who runs AI search audits for B2B companies in the UK?
Tilio sells one-off £500 and £800 audits, credited in full against your first three months if you move onto a managed programme within 30 days. For an ongoing review rather than a one-off, Scalux's £350/month tier includes a technical audit of how AI systems read your site, alongside monitoring of ChatGPT, Claude, Gemini and Google AI Overviews.
Do I need separate agencies for SEO and AI search?
No. On Google's AI surfaces, roughly seven in ten cited pages rank in the top 100 for the same query, and the other engines draw heavily on search indexes too. The two are one discipline; buying them separately usually means paying two retainers for overlapping work.
What is the difference between GEO, AEO and AI search optimisation?
AI search is the broader environment: every surface where an AI system answers instead of serving a list of links. AEO, answer engine optimisation, is about being the top AI-generated answer in a Google search. GEO, generative engine optimisation, is about being cited within generative AI tools such as ChatGPT. This guide covers agencies working across all three.
How do I get my SaaS recommended by ChatGPT?
Three things, in order: pages that answer real buyer questions directly, third-party corroboration so engines can verify you exist, and no technical blockers stopping AI crawlers reading your site.
Can we do AI search optimisation in-house?
Partly. The technical fixes and content work sit comfortably with a capable in-house team, and Varn (no. 8) trains teams for exactly that. The hard part to replicate is continuous measurement across engines: without prompt-set tracking, you cannot tell whether anything you shipped actually changed the answers. If you are building that in-house, start with our comparison of AEO and GEO tools for B2B SaaS.
How long does AI search optimisation take to work?
Individual answers can shift within weeks of the right changes, because AI engines favour fresh, retrievable content. Dependable presence across many buyer prompts typically builds over a few months. Anyone promising a fixed date is guessing.