Services
Everything Castle does, in one place.
Thirteen services across three groups — paid channels, organic and AI search, and the development work underneath both. Each one below links through to its own page where we have written one up in full.
Paid
Paid channels.
Channels you pay to appear in — search, social and now AI assistants.
Google Ads
As a Google Partner agency we run search, shopping, Performance Max and YouTube campaigns across Google AdWords, Google Smart Shopping and Bing. Our PPC managers plan the strategy, build and manage the campaigns and report on them — generating high quality leads at the lowest possible cost per acquisition, with constant monitoring and refining to hold ROI.
Google Ads in detail →Meta Ads
ROI-focused paid social across Facebook and Instagram, from creative and video production through to ad copy and audience testing. We run manual and Advantage+ campaigns, test five copy and hook variations per ad, build lookalike audiences from your own community and retarget everyone who has interacted with the brand.
Meta Ads in detail →TikTok Ads
Short-form paid social built for the platform rather than repurposed from elsewhere. We use TikTok alongside Facebook, Instagram, Twitter and Snapchat in lead generation and ecommerce campaigns where the audience is younger and video-first.
TikTok Ads in detail →ChatGPT Ads
OpenAI has introduced ads inside ChatGPT, matched to the context and intent of a conversation rather than to keywords. With around 900 million weekly users and the UK market opening in 2026, it reaches people while they are still researching. We launch, manage and optimise the campaigns end to end.
ChatGPT Ads in detail →Ecommerce Marketing
An omnichannel programme for online stores — PPC, SEO, web UX, Amazon advertising, social ads and email working together to drive traffic, lift conversion and generate revenue. Over 50 ecommerce specialists in-house, on 30 day rolling contracts.
Ecommerce Marketing in detail →Lead Generation
Paid social and PPC pointed at data-informed landing pages, integrated with your CRM so leads are followed up rather than collected. We have helped businesses increase their leads by over 312%, across energy, car finance, tax rebate, healthcare, legal, construction and more.
Lead Generation in detail →Organic
Organic search and AI search.
Being found, and being cited, without paying for the placement.
AI SEO
Castle’s AI SEO service helps brands get discovered, cited and recommended inside AI-generated answers — in ChatGPT, Google AI Overviews, Perplexity, Copilot, Gemini and Claude. It brings generative engine optimisation, answer engine optimisation and proven SEO fundamentals into one managed programme.
AI SEO in detail →GEO
Generative engine optimisation is the practice of structuring and optimising your content so generative AI models can read it, trust it and reproduce it in their answers. It runs alongside AEO and traditional SEO as part of our AI SEO programme, with citation and authority building to get you recommended directly.
GEO in detail →AEO
Answer engine optimisation targets the retrieval step: most AI systems search before they answer, so the work is making your pages the source they retrieve and cite. We audit and restructure content so it can be lifted cleanly into an answer, and build the authority signals that make a platform choose you.
AEO in detail →SEO
A fusion of strategic SEO content creation, clever link building campaigns and best-practice on-site optimisation to help you outrank competitors on search engines. Our in-house Liverpool team cover strategy, on-page and off-page optimisation and technical SEO, with clear reporting on progress.
SEO in detail →Development
Build and advisory.
The site the marketing points at, and the advice around it.
Shopify Development
An award-winning Shopify and Shopify Plus partner agency designing, developing, optimising and supporting ecommerce stores. We increased Swan’s revenue by 361% in a single year, lifting sales 337% and conversion 40%.
Shopify Development in detail →Web Design
Bespoke website design focused on sales and leads, built on Shopify, WooCommerce, BigCommerce or WordPress to suit the requirement. Over 120 sites in 10+ years, attributed to £23m in extra client revenue since 2017, with unlimited post-build revisions.
Web Design in detail →AI Consulting
Advisory work for teams deciding where AI belongs in their marketing — what to adopt, what to ignore, and what it changes about search, content and paid media. Practical guidance grounded in the campaigns we run, rather than a technology pitch.
Part of a wider programme — ask usAt a glance
All thirteen services.
The same list in one table, if you would rather scan than read.
| Service | Group | What it covers |
|---|---|---|
| Google Ads | Paid | Search, Shopping, Performance Max, YouTube |
| Meta Ads | Paid | Facebook and Instagram paid social |
| TikTok Ads | Paid | Short-form paid social for reach and sales |
| ChatGPT Ads | Paid | Advertising inside AI-powered search |
| Ecommerce Marketing | Paid | Omnichannel growth for online stores |
| Lead Generation | Paid | Qualified enquiries, not vanity metrics |
| AI SEO | Organic | Get cited by ChatGPT, Google AI and Perplexity |
| GEO | Organic | Generative engine optimisation |
| AEO | Organic | Answer engine optimisation |
| SEO | Organic | Organic search that outranks competitors |
| Shopify Development | Development | Shopify and Shopify Plus builds |
| Web Design | Development | Bespoke sites built to convert |
| AI Consulting | Development | Where AI actually fits your marketing |
Not sure which of these you need
Most clients start with two, not one.
Tell us what you are trying to move — revenue, leads, or visibility in AI search — and we will tell you which of the above actually applies and in what order.