The 10 Best AI SEO Agencies in the UK (2026)

Here's why this question suddenly matters: 54% of UK adults now use AI tools like ChatGPT, Copilot or Gemini — rising to 79% of 16–24 year olds (Ofcom, Online Nation 2025). ChatGPT alone logged 1.8 billion UK visits in the first eight months of 2025, nearly five times the year before. When those users ask "who should I hire?", AI engines answer with citations — and businesses that aren't cited don't exist in the answer.

We researched every agency below on its own website and in the live SERPs on 06/11/2026. No pay-to-play, no invented review scores. Disclosure, up front: FactoryJet appears at #1 on its own list. Every agency that currently wins this search query does the same — we verified it (nine of ten page-one results are listicles, at least six of them self-published). What we add is honesty about it, a methodology you can check, and nine real competitors with their actual strengths — including where they beat us.

Top 10 AI SEO agencies in UK — comparison table

Only three of ten publish prices. Keep that in mind when you compare quotes — opacity is the norm in this market, and it favours the agency, not you.

The 10 best AI SEO agencies in the UK, reviewed

1. FactoryJet — best for SMBs and ecommerce brands (disclosure: this is us)

We build and optimize for AI search the way we build websites: senior engineers, fixed published pricing, no annual lock-in. Every retainer covers both Google and the four major AI engines — ChatGPT, Perplexity, Claude, and Gemini — plus Google AI Overviews, with per-engine citation counts reported monthly.

Why we rank ourselves first for SMBs:published pricing ($2,499 one-time AI visibility audit; Growth retainer from $1,999/mo; Scale from $4,999/mo), month-to-month terms, and engineers — not account managers — running the work. Where competitors beat us: if you're a FTSE-250 consumer brand wanting a London boardroom presence, Found or Brainlabs-scale agencies are a better cultural fit. We're honest about that. See our AI SEO service →

2. Found — best for enterprise consumer brands

London-based Found runs a dedicated AI SEO service line under its "Everysearch™" banner, tracking LLM performance through Luminr, its proprietary AI-visibility platform. A named Chief AI Officer (Dora Moldovan) has commented on Google AI Mode's UK launch on BBC radio. Clients include Puma, TOMS, and Toolstation. Pricing not published.

3. Blue Array — best dedicated GEO practice

Reading-based, B Corp certified, organic-search only. Blue Array's generative engine optimisation service covers AI word-association and sentiment analysis, citation gap analysis, and reporting across OpenAI, Gemini, and Meta models — with proprietary GEO frameworks. The only approved GOV.UK Digital Marketplace SEO supplier, per its site.

4. The SEO Works — best published proof

Sheffield HQ with London and Leeds offices. Its GEO/AEO service page publishes numbers most agencies won't: a 2,000% increase in LLM referrals in under a year for one client, a 78% sales uplift attributed to AI referrals for a coffee brand, and a claim that 93% of clients already appear in AI Overviews. Offers a free LLM audit — a low-risk first step.

5. Screaming Frog — best technical evidence

Yes, the SEO Spider company. Its AI Search Optimisation service analyses AI bot log files (training vs indexing vs live-citation crawls), tracks commercial prompts, and A/B tests pages against AI-bot visits. Day-rate model. If you want experiments and evidence rather than retainer promises, start here.

6. Varn — best productised audit

Wiltshire-based with a London office, Varn sells a named "AI Visibility Framework" — a benchmark audit of where your brand is surfaced, cited or referenced across LLMs, with sentiment and competitor benchmarking. A rare concrete, order-able GEO product in a market of bespoke consultancy.

7. Reposition — best for published package bands

London agency publishing SEO package bands (£750–£3,000/mo) directly in its site navigation — transparency we respect. Entity-based SEO with AI-formatted content; case studies include Hugo Boss and UK Flooring Direct.

8. Convert Digital — best budget entry

Brighton-based, and the only agency on this list with full transparent pricing AND a no-upcharge policy: AI SEO is "a standard deliverable across all monthly SEO packages… not an opportunity to upcharge." Bronze starts at £550/mo. For sole traders and small UK businesses, this is the lowest-risk way to start.

9. GA Agency — best for international brands

Soho-based with in-house specialists across six languages. Its BuzzWatch tool monitors brand mentions across ChatGPT, AI Overviews, Gemini, Copilot and Perplexity in 50+ countries and 20+ languages. If you sell across Europe, this is the strongest multilingual GEO offer in the UK. Case studies include Expedia and Calzedonia.

10. Passion Digital — best productised menu

Holborn-based Google Premier Partner with five distinct AI-search sub-services: AIO Optimisation, Deep Research (via its DRX tool), LLM Performance Tracking, Entity Optimisation, and GEO strategy. The most granular service menu in London; strongest for B2B and professional services.

How much does AI SEO cost in UK?

One-time audits: FactoryJet's AI visibility audit is $2,499 (published); The SEO Works offers a free entry-level LLM audit; Varn's AI Visibility Framework is quoted on request. And on generative engine optimization cost in UK specifically: GEO is not a separate product — it should live inside the retainer, not on top of it.

How to choose between them

Three filters separate real AI SEO capability from rebadged classic SEO. First, per-engine reporting: ask for a sample monthly report with citation counts for ChatGPT, Perplexity, Claude, and Gemini separately — most agencies track only Google AI Overviews. Second, who does the work: AI SEO is engineering-heavy (schema, llms.txt, log-file analysis); if a strategist presents and a mystery team executes, quality varies. Third, contract terms: AI search changes quarterly, so month-to-month or short-notice terms keep your agency honest.

Methodology

We verified every agency on its own website on 06/11/2026: service pages, published pricing, office addresses, and at least one differentiator each that can be checked at the source. We excluded agencies that rank in UK listicles but aren't UK-based (HikeMyTraffic — Noida, India) or no longer operate independently (Builtvisible — acquired by Brave Bison, March 2025, no current dedicated AI SEO service page). FactoryJet's inclusion and position are disclosed self-placement — the same practice used by at least six of the ten current page-one results for this query. No agency paid to appear.

Sources: Ofcom Online Nation 2025; Ofcom "From apps to AI search" (2025); Deloitte Digital Consumer Trends 2025 (UK); agency service pages verified 06/11/2026.