Service · GEO / LLM SEO Agency UK
Generative Engine Optimisation for the Buyers Who Ask an LLM First
Peak Digital is a UK GEO and LLM SEO agency running generative-engine-optimisation retainers for brands whose customers now research products inside ChatGPT, Claude, Perplexity and Gemini before they ever hit Google. Shopify's agentic checkout and OpenAI's shopping product are already picking which brands to surface. GEO gets your brand into those answers. Free audit first.
What we do
-
LLM Mention Tracking
Every retainer starts with live mention tracking via DataForSEO across ChatGPT, Claude, Perplexity and Gemini. How often you are mentioned when a customer asks a question in your category, what context you appear in (cited, listed, compared unfavourably), and how you stack against the top three competitors. This is the KPI that used to be organic rankings.
-
Content Structured for LLM Ingestion
LLMs cite content that is easy to verify and reformat: clear factual claims with sources, structured sections, well-labelled tables and lists, definitive long-form pieces. We audit your existing content for LLM-friendliness, restructure where the gains are worth it, and brief new content against the queries customers ask LLMs directly.
-
Product Feed for Agentic Commerce
Shopify's agentic checkout and OpenAI's shopping product both consume product feeds to answer 'what should I buy'. If your feed lacks categorical attributes, thin descriptions or absent review signal, the agent picks a competitor. We rebuild the feed for LLM parsing and structure review data so it can be surfaced.
-
Cite-Worthy Authority Content
LLMs preferentially cite long-form authority pieces from sources with topical credibility. Category pages rarely get cited. A 3,000-word definitive guide on a category-defining question, with clean structure, verifiable claims and an active author signal, does. We produce two to three of these per quarter per client, positioned to become the cited source.
-
GA4 Referral Tracking for LLMs
ChatGPT, Perplexity, Claude and Gemini all send referral traffic when a user clicks through from a cited answer. Most GA4 setups misattribute this as direct or 'other'. We configure GA4 with correct referral exclusions and channel groupings so LLM traffic becomes a first-class channel with its own conversion rate, session behaviour and attributed revenue.
-
Reporting Tied to Share of Voice
Monthly report covers LLM share of voice on your priority category queries, new LLM referral traffic tracked in GA4, attributed revenue from LLM referral sessions, and content plus feed changes shipped this month. Quarterly strategic review covers which surfaces are paying back and where next quarter's investment sits.
How a GEO retainer with us actually runs
GEO is content, feed and tracking work run continuously against a fast-changing set of surfaces. It is not a schema plugin install and it is not a single ChatGPT prompt. Here is the actual rhythm.
-
LLM visibility audit (week 0)
Full audit of your current mention rate across ChatGPT, Claude, Perplexity and Gemini for the 40 to 60 highest-value queries in your category. Competitor gap analysis on where the top three are cited and you are not. Product feed audit against agentic-commerce requirements. GA4 audit for LLM referral tracking (usually broken). Gap map and 90-day roadmap. No commitment past the audit call.
-
Content restructure and feed optimisation (weeks 1 to 12)
Product feed rebuilt against agentic-commerce requirements (categorical attributes, structured descriptions, review data). GA4 referral tracking configured for LLM channels. First tranche of restructured content published: existing category and product pages made LLM-parseable, first definitive authority piece launched. LLM mention tracking programme live. Early wins typically land in month 2 to 3 as LLMs re-crawl.
-
Continuous LLM monitoring (month 4 onwards)
Steady cadence of definitive authority content (typically one piece per month), continuous feed refinement as products change, weekly LLM mention tracking and monthly competitive share-of-voice review. Existing content refreshed as LLM citation patterns shift. GA4 monitored monthly to catch new LLM referral sources as they emerge.
-
Quarterly share-of-voice review (every 90 days)
Every 90 days we step back: where your share of voice has improved, where competitors are catching up, which LLM surfaces are sending the most valuable referral traffic, and where next quarter's content, feed and authority investment should sit. Real strategy, not 'continue current programme'.
The channel your competitors started tracking last year
A pattern from the last 18 months across the UK ecommerce brands we speak to: sales calls and support tickets start opening with "I saw you on ChatGPT" or "Perplexity recommended you". When they check GA4, referral traffic from ChatGPT, Perplexity and Claude is showing up in double-digit percentages. But there is no line item for it in the marketing report. It is happening organically to some brands (the ones with strong content and clean feeds) and not to others (the ones running an SEO-only playbook). GEO is the discipline of intentionally becoming one of the brands that gets cited.
The mistake most UK agencies make with GEO right now is treating it as a content-volume problem. LLMs do not reward volume; they reward citation-worthiness. A single well-structured definitive piece on 'best pizza ovens for UK gardens' will get cited across every major LLM more consistently than 50 shallow product-adjacent posts. The other mistake is treating LLM referral traffic as noise because the sessions per month look small. They are small in absolute count but high in conversion rate: users who arrive from an LLM citation have already been triaged as 'this is a candidate brand', so the session behaves more like a bottom-of-funnel referral than a top-of-funnel search click.
The other channel most UK brands are missing is agentic commerce. Shopify's agentic checkout allows a customer to buy directly through an AI agent conversation, without landing on your storefront. OpenAI's shopping product does similar. The brands that get selected by those agents are the ones whose product feeds have clean categorical attributes, structured descriptions and surfaceable review data. This is not future work. Shopify Sidekick and OpenAI shopping recommendations already influence a rising share of ecommerce discovery. The brands with the cleaner feeds are absorbing that demand quietly.
What clients say
Recent case studies
-
Case study | SEO compounding into AI Mode visibility
How 18 months of law-firm SEO compounded into being the top-cited legal source in Google's AI Mode
298 answers Google AI Mode citations
The same content library built during 18 months of an SEO retainer is now the single most-cited source in Google's AI Mode answers for the client's target legal queries. It…
-
Case study | SEO + Answer Engine Optimisation
How we launched a public services information site and grew organic clicks from zero to over 34,000 a month in three months
34,612 (Month 3) Monthly organic clicks
A new public-services information site launched from a bare domain. Three months in, the site was pulling 34,612 organic clicks a month and had been picked up by Google's AI…
-
Case study · Google Ads for ecommerce
How we compounded a deals ecommerce brand's Google Ads revenue 68x in seven years while holding blended ROAS above 13x
£3.7m (Year 7) Annual Google Ads revenue
Seven years of a Google Ads programme for a deals-and-discounts ecommerce brand. Annual attributed revenue grew from £55k in Year 1 to £3.7m in Year 7 (68x). Blended seven-year ROAS…
Frequently asked questions
What is generative engine optimisation and is it a real channel yet?
Generative engine optimisation is the discipline of getting your brand, content and products cited inside standalone generative AI products (ChatGPT, Claude, Perplexity, Gemini) and agentic commerce surfaces (Shopify's agentic checkout, OpenAI shopping). It is a real channel today for UK ecommerce brands. GA4 data across the portfolios we run shows LLM referral traffic in the 3 to 12 percent range of total sessions for brands with strong content, and rising fast. The brands that started tracking it in 2024 are already outperforming those that have not.
How much does GEO cost in the UK?
Our GEO retainer is All-inclusive. That covers weekly LLM mention tracking across the four major LLMs, content restructure and definitive authority content (typically one long-form piece per month), product feed optimisation for agentic commerce, GA4 setup for LLM referral tracking, monthly reporting and quarterly strategic review. Same price as our SEO and AEO retainers because it is the same class of continuous, editorial, technical work. Bundle two or three together and the second and third come at a discount.
How is GEO different from AEO?
AEO targets the answer surfaces on traditional search engines: Google AI Overviews, Featured Snippets, People Also Ask, voice assistants. It is tracked via Search Console. GEO targets the standalone generative AI products (ChatGPT, Claude, Perplexity, Gemini) plus agentic commerce (Shopify Sidekick, OpenAI shopping). It is tracked via DataForSEO LLM Mentions and GA4 referral data. Most UK brands need both; we run separate retainers so the reporting stays honest, or bundle them together at a discount.
Can you actually track brand mentions inside ChatGPT and Claude?
Yes. DataForSEO's LLM Mentions API queries ChatGPT, Claude, Perplexity and Gemini programmatically with prompts framed like real customer questions in your category, then records how often your brand is mentioned, in what context and how you compare with competitors. It is not perfect (each vendor has slight run-to-run variance) but it is directionally reliable and the only production-grade tracking option for this channel currently available. We use it monthly on every GEO retainer to build the share-of-voice report.
What kind of content do LLMs actually cite?
Long-form authority content with structured sections, verifiable factual claims, clean tables and lists, an active author signal and a domain with topical credibility. LLMs discount low-quality volume aggressively. A single well-researched 3,000-word definitive piece on a category-defining question will get cited across every major LLM more reliably than 50 shallow SEO-style posts. Product pages get cited less frequently than category-authority pieces. That is why the GEO retainer is content-heavy on definitive pieces and light on volume.
What is agentic commerce and does it apply to my UK Shopify store?
Agentic commerce is the emerging pattern where customers buy through an AI agent conversation without ever landing on your storefront. Shopify's agentic checkout allows this natively; OpenAI's shopping product does similar via ChatGPT. The AI agent picks which brand and product to surface based on the product feed data. If your feed has clean categorical attributes, structured descriptions and surfaceable review data, you get selected. If it does not, a competitor whose feed is cleaner absorbs the demand. This applies to any Shopify or WooCommerce store selling to consumers in the UK, and it applies most heavily to categories where customers ask 'what should I buy'.
How long until GEO results show up in GA4?
LLM mention rate typically starts moving in month 2 to 3 as the LLMs re-crawl and reprocess restructured content. GA4 referral traffic follows behind, growing meaningfully from month 4 onwards. Attributable revenue lift depends on your category (tools, home goods, hobby gear and B2B software see revenue impact earliest because customers research those categories heavily via LLM). Overall, meaningful channel signal by month 4 to 6, meaningful revenue by month 6 to 9. Faster than the traditional SEO curve.
Do I need GEO if I already run SEO or AEO?
Yes for most UK ecommerce brands, because GEO tracks a distinct channel that neither SEO nor AEO reports on. SEO reports organic Google clicks. AEO reports answer-surface impressions and click-through. Neither of those covers LLM referral traffic or brand mention rate inside ChatGPT and Claude. GEO can run alongside your existing SEO or AEO retainer, or all three can be consolidated. Whether to consolidate depends on how well the current retainer covers content and feed work. Honest answer in the audit.
Is there a contract lock-in?
No. 30-day notice and we part ways. Everything we've built (content, feed structure, GA4 setup, mention tracking dashboards) stays with you. No clawbacks, no migration fees. Retention through results, not contracts.