- 1.What Is AI Search and Why Is It Changing SEO?
- 2.How ChatGPT Finds and Recommends Businesses
- 3.What Is Generative Engine Optimisation (GEO)?
- 4.7 Ways to Increase Your Visibility in AI Search
- 5.How to Track Traffic From AI Platforms
- 6.Common AI SEO Mistakes UK Businesses Make
- 7.AI SEO Checklist for UK SMEs
- 8.Need Help Appearing in ChatGPT?
What Is AI Search and Why Is It Changing SEO?
For the past 25 years, search engine optimisation has been built around a single model: get your website to appear in a list of blue links on Google. That model is not disappearing, but it is being fundamentally disrupted by a new layer of search - one where AI systems read, synthesise, and summarise information before presenting a single, confident answer to the user.
Google's AI Overviews (formerly Search Generative Experience) now appear at the top of results for a significant proportion of UK queries - particularly informational and commercial investigation searches. Instead of clicking through to a website, users receive a synthesised answer drawn from multiple sources, with citations shown below. The businesses cited in those answers receive a disproportionate share of trust, authority, and - critically - clicks.
ChatGPT's browsing capability and Perplexity's real-time web search operate on a similar principle. When a user asks "What is the best SEO agency in Manchester?" or "How do I fix my website's Core Web Vitals?", these AI tools do not return a list of links - they return a direct answer, citing the sources they found most authoritative and relevant.
Research from BrightEdge (2026) indicates that AI Overviews now appear for over 40% of queries in the UK. Gartner predicts that traditional search engine volume will decline by 25% by 2027 as AI-powered interfaces absorb more queries. The businesses that adapt now will have a significant competitive advantage.
The implications for UK businesses are profound. A plumber in Manchester who ranks on page one of Google but is not cited in AI Overviews is already losing enquiries to competitors who are. A solicitor in Birmingham whose website has no structured data is invisible to ChatGPT, even if their content is excellent. The rules have changed - and the businesses that understand this first will win.
How ChatGPT Finds and Recommends Businesses
Understanding how ChatGPT sources its information is essential to optimising for it. ChatGPT operates using two distinct knowledge layers: its training data (information baked into the model during training) and its browsing capability (real-time web access via Bing's index and direct crawling).
For business-specific queries - "Who are the best SEO agencies in Manchester?" or "What does Think SEO charge for local SEO?" - ChatGPT primarily uses its browsing capability to retrieve current information. This means it is crawling the web in real time, reading pages, and synthesising answers from the most authoritative and relevant sources it finds.
| AI Platform | Data Source | Key Crawler | Primary Ranking Signal |
|---|---|---|---|
| Google AI Overviews | Google's own index | Googlebot | E-E-A-T, schema, page quality |
| ChatGPT (browsing) | Bing index + direct crawl | GPTBot | Bing ranking signals, citations |
| Perplexity | Real-time web crawl | PerplexityBot | Freshness, authority, directness |
| Claude (browsing) | Direct web crawl | ClaudeBot | Content clarity, entity signals |
| Microsoft Copilot | Bing index | Bingbot | Bing SEO signals, structured data |
The critical insight here is that each AI platform has its own crawler and its own ranking signals - but they share several common requirements: your content must be crawlable, your business must be a recognisable entity, and your pages must directly answer the questions users are asking.
For local businesses, the Google Business Profile remains the single most important signal for appearing in AI-generated local results. ChatGPT and Perplexity both pull from Google's local data when answering location-specific queries. Keeping your GBP complete, accurate, and regularly updated is therefore an AI SEO priority, not just a traditional SEO one.
What Is Generative Engine Optimisation (GEO)?
Generative Engine Optimisation - or GEO - is the discipline of optimising your website, content, and online presence to be cited and recommended by AI-powered search engines. It is the natural evolution of SEO, and in 2026, it is no longer optional for UK businesses that want to remain competitive.
Where traditional SEO focuses on ranking in a list of links, GEO focuses on being the source that AI models trust enough to cite in their generated answers. The distinction matters because the user behaviour is different: someone who sees your business cited in a ChatGPT response or a Google AI Overview has already received a recommendation - they arrive at your website with a much higher level of trust and intent than someone who clicked a blue link.
GEO encompasses several disciplines that overlap with traditional SEO but require a different emphasis: entity optimisation (ensuring AI models recognise your business as a real, credible entity), structured data implementation, topical authority building, and technical accessibility for AI crawlers. Think SEO has been delivering GEO services to UK businesses as part of its search services - well ahead of most UK agencies.
Traditional SEO asks: "How do I rank higher in Google's list of links?" GEO asks: "How do I become the source that AI models cite when answering questions in my industry?" The two disciplines are complementary - strong traditional SEO foundations make GEO easier - but GEO requires additional strategies that most agencies are not yet offering.
7 Ways to Increase Your Visibility in AI Search
These are the seven highest-impact actions UK businesses can take right now to improve their visibility in ChatGPT, Google AI Overviews, and Perplexity. They are listed in order of impact and implementation ease.
Implement Structured Data (Schema Markup)
Add JSON-LD schema to every page: LocalBusiness, FAQPage, BlogPosting, Service, and BreadcrumbList. Schema is the primary language AI models use to understand what your business does, who it serves, and where it operates. Without it, AI systems are guessing.
Build Strong Brand Entity Signals
Your business name, address, phone number (NAP), and description must be identical across your website, Google Business Profile, Bing Places, Companies House, LinkedIn, and every directory listing. AI models cross-reference these signals to determine if your business is a credible, real-world entity.
Consistent Business Citations
Get listed on authoritative UK directories: Yell.com, Checkatrade, Trustpilot, FreeIndex, Yelp UK, and industry-specific platforms. Each citation reinforces your entity signals and increases the probability that AI models will reference your business when answering relevant queries.
Build Topical Authority Through Content Clusters
AI models favour sources that demonstrate deep expertise in a specific topic. Create a pillar page (like this one) and support it with 8–10 related articles that all link back to the pillar. This signals to AI that your site is the authoritative resource on a given subject.
Create FAQ-Rich, Question-Answering Content
AI Overviews and ChatGPT responses are built from content that directly answers specific questions. Structure your pages with clear H2/H3 headings that mirror the questions your customers are asking. Add FAQPage schema to every page that contains Q&A content.
Ensure Fast, Crawlable Websites
AI crawlers (GPTBot, ClaudeBot, PerplexityBot) need to be able to access and index your content. Check your robots.txt to confirm these bots are not blocked. Ensure your Core Web Vitals pass (LCP under 2.5s, CLS under 0.1, INP under 200ms) and your site loads cleanly without JavaScript-dependent content that crawlers cannot render.
Implement an llms.txt File
An llms.txt file is a structured text document placed at the root of your website (yourdomain.com/llms.txt) that tells AI models exactly what your business does, who it serves, what pages exist, and how to contact you. It is the AI equivalent of robots.txt - and in 2026, it is one of the most impactful quick wins available to UK businesses.
How to Track Traffic From AI Platforms
One of the most common frustrations UK businesses express about AI search is the difficulty of measuring its impact. Unlike traditional organic search, AI-referred traffic does not always arrive with a clear referral source - but there are several reliable methods for tracking it.
GA4 Referral Sources
In Google Analytics 4, navigate to Reports → Acquisition → Traffic Acquisition and filter by Session source. Look for referrals from chat.openai.com, perplexity.ai, claude.ai, and bing.com (which carries Copilot traffic). These referrals are growing month-on-month for businesses that have implemented AI SEO strategies.
Google Search Console Changes
Google Search Console does not yet provide a dedicated AI Overviews report, but you can infer AI Overview appearances by monitoring queries where your click-through rate has dropped despite stable or improved rankings. This pattern - high impressions, lower CTR - is characteristic of queries where an AI Overview is absorbing clicks before users reach the organic results.
AI Visibility Monitoring
Dedicated AI visibility tools - including Semrush's AI Overview tracker, Authoritas, and SE Ranking's AI Overview monitoring - allow you to track when your website is cited in AI Overviews for specific keywords. Think SEO includes AI visibility monitoring in all SEO packages as standard.
| Signal to Monitor | Where to Find It | What It Tells You |
|---|---|---|
| AI referral traffic | GA4 → Traffic Acquisition | Direct visits from AI platforms |
| CTR drop on ranked pages | Google Search Console | AI Overview absorbing your clicks |
| AI Overview citations | Semrush / SE Ranking | Which queries you appear in |
| GPTBot crawl activity | Server logs / Cloudflare | Whether ChatGPT is indexing you |
| Bing index coverage | Bing Webmaster Tools | ChatGPT/Copilot visibility proxy |
Common AI SEO Mistakes UK Businesses Make
In auditing hundreds of UK business websites as part of its search services, Think SEO has identified six mistakes that consistently prevent businesses from appearing in AI search results. If your site is making any of these errors, fixing them should be your immediate priority.
Many UK businesses unknowingly block GPTBot, ClaudeBot, and PerplexityBot in their robots.txt file. If AI crawlers cannot access your site, you cannot appear in AI search results - full stop.
Publishing content without schema markup means AI models have to infer what your page is about. Structured data removes the guesswork and dramatically increases the chance of being cited.
If your business name is 'Smith Plumbing Ltd' on your website but 'Smith Plumbing' on Google Business Profile and 'Smith & Sons Plumbing' on Yell, AI models treat these as different entities. Consistency is non-negotiable.
Traditional SEO content is often written to rank for keywords. AI SEO requires content that directly answers specific questions - because AI models are looking for the most direct, accurate answer to a user's query.
Your Google Business Profile is one of the most powerful AI SEO signals available to local businesses. Regular posts, complete service listings, Q&A responses, and photo updates all feed into AI Overview results for local queries.
As of mid-2026, the majority of UK business websites still have no llms.txt file. This is a significant missed opportunity - it takes less than an hour to implement and immediately improves AI crawler understanding of your business.
AI SEO Checklist for UK SMEs
Use this checklist to audit your current AI SEO readiness. Each item represents a concrete action you can take to improve your visibility in ChatGPT, Google AI Overviews, and Perplexity. Think SEO's free SEO audit tool checks many of these automatically.
Need Help Appearing in ChatGPT?
Think SEO has been delivering AI SEO and Generative Engine Optimisation services to UK businesses as part of its search services. The work covers technically accessible pages, useful content and accurate business information, without a promise of AI inclusion.
Every Think SEO package includes AI visibility monitoring, llms.txt implementation, structured data auditing, and a dedicated AI SEO strategy. We work on rolling monthly contracts - no lock-ins, no long-term commitments. Just measurable results.
Find out exactly where you stand in AI search results and what's preventing you from appearing.
Get Free AuditRolling monthly packages from £395/month. GEO, technical SEO, content strategy, and more.
View PackagesSpeak directly to a senior AI SEO expert with hands-on SEO support. No junior account managers.
Get in TouchFrequently Asked Questions
To appear in ChatGPT, you need strong brand entity signals (consistent NAP across the web), high-quality content that answers specific questions, an llms.txt file on your website, and structured data markup. ChatGPT uses Bing's index and its own training data, so being cited on authoritative websites and having a well-structured site are both important.
Generative Engine Optimisation (GEO) is the practice of optimising your website and online presence to appear in AI-generated search results - including Google AI Overviews, ChatGPT, Perplexity, and similar tools. It differs from traditional SEO in that it focuses on being cited as a trusted source by AI models, not just ranking in a list of blue links.
An llms.txt file helps AI crawlers understand your business, services, and content in a structured format. While not yet a formal standard, it is increasingly adopted by AI platforms and is recommended as part of any AI SEO strategy in 2026. Think SEO recommends all UK businesses add an llms.txt file to their website - you can generate one for free using our llms.txt generator tool.
There is no fixed timeline, but businesses that implement structured data, build topical authority, and create FAQ-rich content typically see AI Overview appearances within 2–4 months. Technical SEO foundations (fast load times, crawlability) are a prerequisite.
AI SEO packages from Think SEO start from £395/month and include GEO optimisation, llms.txt implementation, structured data, and content strategy. A free AI visibility audit is available - no obligation, results in 60 seconds.