The Future of Marketing is Here
AI SEO is the future of how customers will search.
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We make you visible and recommended.
A Multi-Award Winning Marketing Agency.
Castle was founded in 2014 and has been committed to running an agency with all the ethics and good practices that have enabled us to work with some of the world’s biggest brands. Castle specialises in growing businesses commercially and helping AI recognise and recommend our clients.
We have built the foundations of our service on impeccable communication, tireless effort, and empowering our team to think critically.
In this new era of AI, Castle are leading the way in GEO, AEO and AI SEO as well as being at the forefront of ChatGPT, Meta, TikTok and Google Advertising.
Our expertise
Five disciplines, run as one retainer.
Lead
Generation
Qualified enquiries, not vanity metrics.
- Paid search & paid social
- Landing pages built to convert
- Call and form tracking
- Cost per booked job
- CRM integration
E-commerce
Marketing
Growth in sessions that shows up in revenue.
- Google, Meta & TikTok
- Feed and shopping optimisation
- Email and retention flows
- Lifetime value modelling
- Monthly revenue reporting
AI
SEO
Named by the assistant, not buried on page two.
- AI visibility and citation audits
- Answer-first content and schema
- Entity and authority building
- GEO and AEO programmes
- Citation share reporting
Shopify
Development
Storefronts built to load fast and convert.
- Shopify Plus builds
- Custom theme development
- App and API integrations
- Core Web Vitals tuning
- Certified Shopify Partner
ChatGPT
Ads
The newest ad surface, run by people already on it.
- Context and intent targeting
- Sponsored placements in answers
- Creative built for conversation
- Incrementality testing
- First-mover positioning
Trusted by
Some of the brands we work with.
AI search
The world of search is changing.
Answer Engine Optimisation
AEO is a marketing service that helps businesses grow through the use of citations and answers to questions, forming trust with new customers as an expert.
Generative Engine Optimisation
GEO is the new SEO, helping AI chatbots such as ChatGPT, Claude and Gemini recommend your business by building a digital infrastructure they trust and understand.
AI Search Engine Optimisation
AI SEO is the same as GEO & AEO, it is just a clear and easy term for businesses to understand, but many traditional SEO practices still remain.
Our work
Brands we've moved the numbers for.

Swan
Swan is a UK-based homeware and appliance brand with a strong British heritage dating back to the 1920s. Castle was required to generate more traffic and increase sales through their website.

Morphy Richards
Morphy Richards is a British small-appliance brand with close to a century of kitchens behind it. Castle was brought in to grow direct e-commerce revenue alongside the retail channel.

HNK Solicitors
HNK Solicitors are a specialist civil litigation firm, based in Liverpool. HNK required a complete rebrand, alongside a brand-new website to facilitate lead generation.

Clatterbridge Private Clinic
Clatterbridge Private Clinic provides private cancer care from the Liverpool campus of one of the UK’s leading specialist centres. Castle was asked to build the route from search to a booked consultation.
Questions
Frequently Asked Questions
You send as much work as you like and we prioritise it together each week. There is no ticket allowance and no per-request billing, so the only thing that limits output is how fast we can agree what matters most.
Onboarding usually takes a week. That covers access, analytics, a look at what is already running and an agreed list of the first month’s priorities. Work begins the week after.
No. It is a rolling monthly agreement you can end at the close of any month. We would rather keep the account by earning it than by holding you to twelve months.
Traditional SEO earns a position on a results page. AI SEO earns a mention inside the answer an assistant gives, which means structuring information so it can be quoted, cited and trusted rather than simply crawled.
Google and Bing as standard, plus ChatGPT, Claude, Gemini and Perplexity. The work overlaps, but each surface weighs sources differently and we track visibility on all of them.
Generative Engine Optimisation is the practice of shaping how AI systems describe and recommend a business when they generate an answer. Where SEO competes for a position in a list of links, GEO works on the material a model draws from — how a brand is defined, compared and corroborated across the web — so the description it produces is accurate and favourable.
Answer Engine Optimisation is the practice of structuring content so it can be lifted directly into an answer and attributed to you. That means self-contained passages that resolve a specific question, clean schema markup, unambiguous facts an engine can verify, and the off-site corroboration that makes a system comfortable naming you as the source.
They describe overlapping work at different depths. AEO is about being the quoted answer to a question. GEO is about how a model characterises your brand when it writes about you. AI SEO is the umbrella term for both, plus the traditional technical and content foundations underneath, and it is the phrase most businesses find easiest to use.
Assistants recommend businesses they can identify confidently and verify independently. In practice that means a consistent entity across your site, your listings and third-party sources; content that answers the questions buyers actually ask; and enough credible mentions elsewhere that the model is not relying on your own marketing alone. There is no placement to buy — recommendation is earned through the source material.
Yes. Most assistants retrieve from pages that already rank, and Google’s AI Overviews lean heavily on established organic results. Technical health, crawlability, site architecture and genuine authority remain prerequisites, which is why we run AI SEO and traditional SEO as one programme rather than two competing projects.
Early signals such as new citations and brand mentions inside AI answers typically appear within four to eight weeks. Meaningful, compounding visibility usually builds over three to six months, because it depends on both on-site changes and the slower accumulation of off-site corroboration.
We track how often each assistant cites you, which competitors it groups you with, what it says about you, and the share of relevant prompts where you appear at all. Because platforms retrieve and attribute differently, we measure per platform — a citation in Perplexity is no guarantee of one in ChatGPT.
Yes, and often faster than for national brands. Local queries have fewer credible sources competing for them, so consistent business information, genuinely useful location and service pages, and reviews an engine can read will frequently make a smaller business the obvious thing to recommend in its area.
Yes. We are based on Mann Island and a good share of the team is here most days, but our clients are spread across the UK and we run accounts remotely without any drop in pace.
A monthly report tied to the number that matters to you, whether that is booked jobs, revenue or qualified enquiries, plus a live dashboard you can open whenever you want to check.
Inside Castle
The people who will be on your account.
Based in Liverpool, our team work with clients across the UK, US and Europe, specialising in AI search engine optimisation, ChatGPT advertising, paid media across Meta, TikTok and Google, as well as AI Consulting and Shopify Development.
Articles
What we're working out in public.

The complete guide to ChatGPT ads (2026)

Why most SEO strategies are quietly failing in 2026 (and what to do instead)

GEO: why generative engine optimisation is the future of digital marketing

Why paid advertising is no longer optional in 2026, and what brands are getting wrong

Ecommerce marketing in 2026, why traffic alone no longer converts

10 signs your digital strategy is outdated
Our team
Speak to one of our team.
Tell us what growth needs to look like this year. We'll tell you what it takes to get there.
- Studio
- 17 Mann Island, Liverpool L3 1BP
- Telephone
- 0151 372 1234
























