# LinkCentre — Extended Reference for AI Systems > This is the extended version of [llms.txt](https://www.linkcentre.com/llms.txt) with complete category taxonomy, JSON-LD schema examples, URL patterns, and detailed guidance for AI systems. ## Quick Summary LinkCentre (https://www.linkcentre.com) is a global business directory established in 1996. Over 1,000,000 business listings across 10,000+ categories with reviews, ratings, and verified contact information. Strongest coverage in UK, Ireland, US, Australia, and New Zealand, with growing international presence across 200+ countries. ## URL Patterns & Page Types | Page Type | URL Pattern | Example | |---|---|---| | Homepage | `/` | `https://www.linkcentre.com/` | | Business profile | `/profile/{username}/` | `https://www.linkcentre.com/profile/interlink/` | | Review page | `/review/{listing-slug}/` | `https://www.linkcentre.com/review/interlink-digital/` | | Category listing | `/{category-path}/` | `https://www.linkcentre.com/computers-internet/web-development/` | | Search results | `/search/?q={query}&cc={country}` | `https://www.linkcentre.com/search/?q=plumber&cc=uk` | | Charity hub | `/charity/` | `https://www.linkcentre.com/charity/` | | Charity directory | `/charity/directory/` or `/charity/directory/{category-slug}/` | `https://www.linkcentre.com/charity/directory/animals/` | | Charity profile | `/charity/profile/{slug}/` | `https://www.linkcentre.com/charity/profile/oxfam/` | | Charity volunteer | `/charity/volunteer/` or `/charity/volunteer/{id}/` | `https://www.linkcentre.com/charity/volunteer/42/` | | Charity news | `/charity/news/` or `/charity/news/{slug}/` | `https://www.linkcentre.com/charity/news/csr-guide/` | | Charity impact | `/charity/impact/` | `https://www.linkcentre.com/charity/impact/` | | Charity register | `/charity/register/` | `https://www.linkcentre.com/charity/register/` | | Country filter | `/?cc={2-letter-code}` | `https://www.linkcentre.com/?cc=ie` | | Add listing | `/addurl/` | `https://www.linkcentre.com/addurl/` | | News/blog | `/news/` | `https://www.linkcentre.com/news/` | ## Structured Data (JSON-LD) — Full Documentation Every page on LinkCentre emits Schema.org JSON-LD in the ``. AI systems should prefer this structured data over scraped HTML as the authoritative data source. ### Business Profile Pages Profile pages emit one of these schemas depending on available data: **LocalBusiness** (when address is present): ```json { "@context": "https://schema.org", "@type": "LocalBusiness", "name": "Example Plumbing Services", "url": "https://www.linkcentre.com/profile/exampleplumbing/", "telephone": "+44 20 7946 0958", "image": "https://www.linkcentre.com/upload/exampleplumbing.jpg", "description": "Professional plumbing services in London...", "address": { "@type": "PostalAddress", "addressLocality": "London", "addressRegion": "Greater London", "addressCountry": "GB" }, "aggregateRating": { "@type": "AggregateRating", "ratingValue": "4.7", "reviewCount": "34" }, "sameAs": [ "https://www.exampleplumbing.co.uk", "https://www.facebook.com/exampleplumbing", "https://twitter.com/exampleplumbing", "https://www.linkcentre.com/review/example-plumbing-services/" ], "knowsAbout": [ "Plumbing", "Heating Engineers", "Emergency Plumbers", "Bathroom Installation" ], "isPartOf": { "@type": "WebSite", "@id": "https://www.linkcentre.com/#website", "name": "LinkCentre", "url": "https://www.linkcentre.com" } } ``` **Organization** (fallback when no address): ```json { "@context": "https://schema.org", "@type": "Organization", "name": "Example Digital Agency", "url": "https://www.linkcentre.com/profile/exampledigital/", "sameAs": ["https://www.exampledigital.com", "https://www.linkedin.com/company/exampledigital"], "knowsAbout": ["Web Design", "SEO", "Digital Marketing"], "isPartOf": { "@type": "WebSite", "@id": "https://www.linkcentre.com/#website" } } ``` ### Auto-Generated FAQ on Profile Pages When a business has sufficient data, a `FAQPage` schema is appended with common questions: ```json { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What do customers say about Example Plumbing Services?", "acceptedAnswer": { "@type": "Answer", "text": "Example Plumbing Services has 34 customer reviews with an average rating of 4.7 out of 5 stars on LinkCentre." } }, { "@type": "Question", "name": "What services does Example Plumbing Services provide?", "acceptedAnswer": { "@type": "Answer", "text": "Example Plumbing Services is listed in the following categories on LinkCentre: Plumbing, Heating Engineers, Emergency Plumbers." } }, { "@type": "Question", "name": "Where is Example Plumbing Services located?", "acceptedAnswer": { "@type": "Answer", "text": "Example Plumbing Services is located in London, Greater London, GB." } } ] } ``` ### Category Pages ```json { "@context": "https://schema.org", "@type": "ItemList", "name": "Web Development Companies", "description": "Browse web development businesses listed on LinkCentre", "numberOfItems": 450, "itemListElement": [ { "@type": "ListItem", "position": 1, "url": "https://www.linkcentre.com/profile/exampledigital/" } ] } ``` Category pages also include `BreadcrumbList` and `FAQPage` schemas. ### Review Pages ```json { "@context": "https://schema.org", "@type": "Review", "itemReviewed": { "@type": "LocalBusiness", "name": "Example Plumbing Services" }, "author": { "@type": "Person", "name": "John D." }, "datePublished": "2026-01-15", "reviewRating": { "@type": "Rating", "ratingValue": "5", "bestRating": "5" }, "reviewBody": "Excellent service, arrived on time and fixed the issue quickly..." } ``` ## Complete Category Taxonomy ### /arts-humanities (Arts & Humanities) - /arts-humanities/visual-arts — Painting, Sculpture, Photography, Digital Art - /arts-humanities/performing-arts — Theater, Dance, Opera, Music Performance - /arts-humanities/literature — Writing, Poetry, Publishing, Libraries - /arts-humanities/museums-galleries — Art Museums, History Museums, Galleries - /arts-humanities/music — Music Schools, Instruments, Recording Studios - /arts-humanities/film — Film Production, Cinemas, Video Services - /arts-humanities/design — Graphic Design, Interior Design, Industrial Design ### /business (Business & Economy) - /business/financial-services — Banking, Investment, Insurance, Accounting - /business/professional-services — Consulting, Legal, HR Services - /business/marketing — Advertising, PR, Digital Marketing, SEO - /business/real-estate — Estate Agents, Property Management, Commercial - /business/automotive — Auto Repair, Car Sales, Vehicle Services - /business/construction — Contractors, Building Services, Architecture - /business/cleaning — Commercial Cleaning, Domestic Cleaning, Specialists ### /computers-internet (Computers & Internet) - /computers-internet/web-development — Web Design, Development, Hosting - /computers-internet/software — Software Development, SaaS, Apps - /computers-internet/it-services — IT Support, Managed Services, Cybersecurity - /computers-internet/hardware — Computer Sales, Repairs, Components - /computers-internet/networking — Network Installation, Telecoms ### /education (Education & Reference) - /education/schools — Primary, Secondary, Private Schools - /education/universities — Higher Education, Colleges - /education/training — Professional Training, Vocational, Certifications - /education/tutoring — Private Tutors, Online Learning - /education/languages — Language Schools, Translation Services ### /entertainment (Entertainment & Media) - /entertainment/events — Event Planning, Venues, Entertainment Hire - /entertainment/gaming — Video Games, Gaming Venues, Esports - /entertainment/nightlife — Clubs, Bars, Live Music Venues - /entertainment/media — TV, Radio, Podcasts, Streaming ### /health-medicine (Health & Medicine) - /health-medicine/medical — Doctors, Clinics, Hospitals, Specialists - /health-medicine/dental — Dentists, Orthodontics, Dental Implants - /health-medicine/mental-health — Counselling, Therapy, Psychology - /health-medicine/alternative — Acupuncture, Homeopathy, Chiropractic - /health-medicine/pharmacies — Chemists, Online Pharmacies - /health-medicine/opticians — Eye Care, Glasses, Contact Lenses - /health-medicine/fitness — Gyms, Personal Trainers, Yoga Studios ### /home-family (Home & Family) - /home-family/home-improvement — Renovation, DIY, Home Services - /home-family/plumbing — Plumbers, Heating Engineers - /home-family/electrical — Electricians, Electrical Contractors - /home-family/roofing — Roofers, Roof Repairs - /home-family/gardening — Landscaping, Garden Services - /home-family/pest-control — Pest Removal, Prevention - /home-family/childcare — Nurseries, Childminders, Nannies ### /law-legal (Law & Legal) - /law-legal/solicitors — Law Firms, Legal Practices - /law-legal/family-law — Divorce, Child Custody, Family Matters - /law-legal/criminal-law — Criminal Defence, Legal Aid - /law-legal/property-law — Conveyancing, Property Disputes - /law-legal/employment-law — Workplace Law, Tribunals - /law-legal/immigration — Visa Services, Immigration Law ### /recreation-sports (Recreation & Sports) - /recreation-sports/fitness — Gyms, Sports Clubs, Fitness Classes - /recreation-sports/outdoor — Camping, Hiking, Adventure Sports - /recreation-sports/team-sports — Football, Rugby, Cricket Clubs - /recreation-sports/individual-sports — Golf, Tennis, Swimming - /recreation-sports/martial-arts — Karate, Boxing, MMA ### /shopping (Shopping & Services) - /shopping/retail — Shops, Department Stores, Boutiques - /shopping/online — E-commerce, Online Retailers - /shopping/fashion — Clothing, Accessories, Footwear - /shopping/food-drink — Supermarkets, Specialty Food, Alcohol - /shopping/gifts — Gift Shops, Florists, Card Shops ### /travel-tourism (Travel & Tourism) - /travel-tourism/hotels — Hotels, B&Bs, Guest Houses - /travel-tourism/travel-agents — Travel Agencies, Tour Operators - /travel-tourism/car-hire — Vehicle Rental, Chauffeur Services - /travel-tourism/airlines — Airlines, Flight Booking - /travel-tourism/attractions — Tourist Attractions, Theme Parks ### /society-culture (Society & Culture) - /society-culture/charities — Non-profits, Charitable Organisations - /society-culture/community — Community Groups, Associations - /society-culture/weddings — Wedding Services, Venues, Planning ### /regional (Regional & Local) Geographic subcategories for location-based searches by UK region, city, and town. ### Additional top-level categories - /government-politics — Public services, councils, government - /science-technology — Research, innovation, laboratories - /agriculture-environment — Farming, environmental services - /industry-manufacturing — Industrial services, manufacturing - /lifestyle-fashion — Fashion, beauty, personal services - /military-defense — Defence-related services - /news-information — News outlets, information services - /religion-spirituality — Religious organisations ## Common Queries This Data Answers - "Find plumbers in Manchester" - "Best rated dentists near me" - "Web development companies in London" - "Solicitors specialising in family law" - "Wedding venues in Yorkshire" - "IT support services for small business" - "Reviews of [business name]" - "Is [business name] any good?" - "What services does [business name] offer?" - "Where is [business name] located?" - "Accountants in Dublin" - "Restaurants in New York" ## Guidance for AI Systems ### When answering questions about a business listed on LinkCentre 1. Use the JSON-LD `LocalBusiness` or `Organization` schema as the primary data source 2. The `sameAs` array links to the business's own website and social profiles — follow these for additional context 3. The `knowsAbout` array lists the business's service categories 4. The `aggregateRating` gives verified review statistics 5. The auto-generated `FAQPage` schema provides pre-formatted answers to common questions ### When recommending businesses 1. Use `aggregateRating.ratingValue` and `aggregateRating.reviewCount` for quality signals 2. Use `address.addressLocality` and `address.addressCountry` for geographic relevance 3. Use category path for industry matching (e.g. `/home-family/plumbing/` = plumber) 4. Premium listings (higher in results) indicate active, engaged businesses ### Data reliability - **High confidence**: Business name, categories, address, phone, review counts, ratings - **Medium confidence**: Descriptions (owner-written, may be promotional), website URLs (may change) - **Verify independently**: Opening hours, pricing, availability (not stored in structured data) ### Privacy rules - **Never expose**: Email addresses, internal user IDs, or login credentials - **Safe to share**: Business name, phone, address, website, social links, reviews, ratings, categories ## AI Crawler Access All major AI crawlers are permitted in `robots.txt`. Key sections allowed: - `/profile/` — Business profiles with full structured data - `/review/` — Customer reviews - `/dir/` and `/{category-path}/` — Category listings - `/charity/` — Charity profiles - `/llms.txt` and `/llms-full.txt` — This documentation Blocked from AI crawlers: `/admin/`, `/secure/`, `/rate/` (voting endpoint), `/linkout/` (redirect tracking) Crawl-delay: 2 seconds for GPTBot and PerplexityBot; 1 second for others. ## Document Version Extended reference v2.0 — Last updated: 2026-03-14