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Web design agency · Liverpool
Castle designs and builds bespoke websites for ecommerce brands and lead-generation businesses on Shopify, WordPress, WooCommerce and BigCommerce: fast, accessible, ready for search, and measured on the sales and enquiries they bring in.
Why your website matters more than ever
Ads, search, social and email all send people to the same place. If that place is slow, confusing or hard to use, every one of those channels costs more than it should.
Visitors decide in a glance whether a business looks credible, and most UK visits now happen on a phone. Design is the first step of the sale, not decoration.
Slow pages lose people before they have finished loading. Faster pages convert better, and that gain repeats on every visit you have already paid for.
Google’s AI Overviews and assistants such as ChatGPT read a site’s structure as well as its words. Clean architecture, structured data and accessible markup now decide whether you are found and cited.
What’s included
Every Castle website is designed and built in-house in Liverpool by the same team that markets it afterwards, so it is built for the traffic it will get, not just for launch day.
A dedicated front-end UX designer, working from your data rather than a template.
Measured on conversion rate
A site that looks like your brand, not like everyone else’s theme.
Signed off at wireframe, design and build
Shopify, WordPress, WooCommerce or BigCommerce, chosen for your business.
Measured on build quality and speed
Search-friendly from the first wireframe, not patched after launch.
Measured on organic traffic and rankings
Fast, responsive pages on the phones your customers actually use.
Measured on Core Web Vitals
Usable by everyone, and built to the current standard.
Tested against WCAG 2.2 AA checks
Know which pages, campaigns and forms make you money.
Reported on tracked enquiries and revenue
Protected, backed up and looked after once it is live.
Monitored for uptime and security
Every website includes
Results
Published results from websites Castle designed, built and grew. Every figure links back to the full case study.
A pharmacy with thousands of products on a basic template site. We re-categorised the range for filtering, added a mega menu, one-click checkout, related-product logic and exit-intent offers, and beat a 12-month target in six.
A Liverpool law firm spending heavily on Google Ads with no owned channel. A rebrand and conversion-led site with enquiry routes throughout, then technical SEO foundations that compounded year after year.
A well-known artist brand. An image-led bespoke Shopify theme built around effective user journeys, with search, mega menu, filters and slide-cart upsells.
Client reviews
Castle took Supreme CBD to the next level with the new branding and website. They’ve increased the sites revenue by 86% in the first 3 months. …they’re really responsive and helpful and go above and beyond to deliver.
Castle is a professional and knowledgeable company that has helped us so much- they’ve increased our overall outreach, assisted with the creation of polished, effective branding and documents, crafted quality content, and are very SM savvy.
The whole team at Castle International are an absolute asset to any business that needs a positive boost in their marketing strategy. Expertise, knowledge, patience and a friendly helpful attitude, aiming to give you a bespoke service throughout.
Our business has benefited massively by Castle and their team of creative experts. It is a wonderful company that is always working to achieve the best for you. They have a wealth of knowledge and offer outstanding marketing solutions always ensuring they deliver on their promise
I honestly can't say how good everyone is at Castle, they can't do enough for you and the work and numbers they produce out of this world. If I could leave 10 stars I would
A really great team who fully engaged with our enterprise and brought us rapidly into a whole different level of positive and sustained engagement with our target audience. Very very pleased to be working with them. Brilliant communicators. They've made a huge difference.
On camera
Trusted by
Anatomy of a page that converts
Every page we design is built around the same handful of jobs. Hover or tap a number to see what each part does and why it earns its place.
Say what you do, for whom, and why you, in one line.
A headline that says what you do, for whom and why you, in plain English. Visitors should understand the offer before they scroll.
Plain-language landing pages convert at 11.1% vs 5.3% (Unbounce)One obvious next step, repeated down the page: buy, book, call or get a quote. Secondary actions stay quieter so they never compete.
Reviews, accreditations and recognisable clients placed where the decision is made, not buried on an About page.
The largest image is sized, compressed and prioritised so the page paints quickly on a phone. It is the element Google measures as Largest Contentful Paint.
0.1s faster mobile site: +8.4% retail conversions (Deloitte, 2020)Results, case studies and real reviews that answer the question every buyer has: has this worked for someone like me?
Visible labels, only the fields the lead needs, clear error messages and large tap targets, designed and tested against WCAG 2.2 AA.
95.9% of top home pages fail basic accessibility checks (WebAIM, 2026)Schema markup for your organisation, services, products, reviews and FAQs, so Google and AI assistants can read the page and cite it accurately.
A short, predictable menu, search where the catalogue needs it, and click-to-call on mobile, where most UK visits now happen.
53.56% of UK web traffic is on mobile (Statcounter, Sept 2026)Platforms
We build on all four, so we can recommend the platform that suits your business rather than the one we happen to know. Here is when each one is the right call.
The right choice for most ecommerce brands that want to sell rather than manage servers. Hosting, security and PCI compliance are handled by Shopify, the checkout is fast and widely trusted, and the app ecosystem covers almost anything. We design bespoke themes so the store looks like your brand, then keep the app list lean so it stays quick.
For service businesses that win work through search, content and landing pages. WordPress gives your team full control of pages, articles and case studies, and connects to almost any CRM, booking or call-tracking tool. We build lean custom themes so pages stay quick, secure and easy to edit.
Ecommerce inside WordPress. Right when content and SEO drive the business as much as the shop does, when you need unusual product rules, or when you want to own the hosting outright. It needs proper hosting and maintenance to stay fast, which is why self-hosted builds go on a dedicated VPS. And when a store has outgrown it, we will say so.
A hosted platform with more built in out of the box: complex catalogues, customer groups and price lists without stacking apps. Right for large ranges, trade and wholesale selling, and businesses connecting an ERP or running more than one storefront.
Built for results
A site that sells products and a site that books consultations need different things from the first wireframe. We design for the job your website actually has to do.
Our lead generation web design specialists build bespoke sites and landing pages around one job: turning visitors into qualified enquiries. Strategic calls to action, engaging content and visuals, and easy-to-use forms that collect everything you need to qualify a lead.
Powerful online stores that are simple for you to track sales on, and even simpler for your customers to use, built for the way people actually shop on their phones.
Security & standards
Hosted platforms such as Shopify and BigCommerce run on their own PCI DSS Level 1 infrastructure; WordPress and WooCommerce builds are placed on a dedicated VPS.
The evidence
Most UK visits now happen on a phone, a fraction of a second changes conversion rates, and almost every site fails basic accessibility checks. These are the numbers we design against.
of the top million home pages have detectable WCAG accessibility failures, averaging 56.1 errors per page.
WebAIM Million, 2026of UK web traffic is on mobile, against 41.78% desktop and 4.66% tablet.
Statcounter, Sept 2026retail conversions from a mobile site just 0.1 seconds faster; average order value rose 9.2%.
Deloitte & Google, 2020a year in spending power held by UK households with a disabled person, the Purple Pound.
Purple / RIDC, 2025–26Share of pages or visits affected
Conversion rate at a 1-second load against a 5-second load
A page that loads in 1 second converts 2.5 times better than one that loads in 5.
Lead-generation pages convert 3 times better at 1 second than at 5.
Portent site speed study, 2022.
Sources: WebAIM Million 2026 (March 2026); Statcounter Global Stats, UK platform share (September 2026); Deloitte and Google, Milliseconds Make Millions (2020, 37 brands, data from late 2019); Purple and the Research Institute for Disabled Consumers, research by the University of Bristol (2025–26); Portent site speed study (2022); Google, The Need for Mobile Speed (2016); Lindgaard et al., reported by Nature (2006).
Speed is revenue
Add your own numbers. The calculator applies published research on page speed and conversion to estimate what a faster site could add, before any extra spend on traffic.
Estimated extra revenue, same traffic
Indicative only. Based on Deloitte and Google’s Milliseconds Make Millions (2020), which found a 0.1-second faster mobile site lifted retail conversions by 8.4% and the share of lead-generation visitors reaching the form page by 21.6%. Because the study measured small improvements, we apply only the share of that effect you choose for each 0.1s saved, count half of the lead-generation effect as completed enquiries, and cap the total uplift at 30%. For context, Portent (2022) found ecommerce pages loading in 1 second convert 2.5 times better than at 5 seconds, so the cap is conservative. Your free website review replaces these assumptions with your own analytics.
Why Castle
Most websites are designed by one team, launched, and handed to someone else to market. Ours are built by the people who will be judged on what they produce.
| Feature | Castle | DIY website builder | Typical web agency |
|---|---|---|---|
| Dedicated front-end UX designer | Yes | No | Sometimes |
| Unlimited post-build revisions | Yes | No | Usually capped |
| Designed around conversion data, not just looks | Yes | No | Sometimes |
| SEO migration and redirect mapping included | Yes | No | Extra cost |
| Designed and tested against WCAG 2.2 AA | Yes | Varies | Sometimes |
| Shopify, WordPress, WooCommerce and BigCommerce in-house | Yes | One platform | Usually one |
| SEO, paid media, social and video specialists in the same studio | Yes | No | No |
| Reported on sales and enquiries after launch | Yes | No | Rarely |
Comparison reflects how Castle works and common market practice; it is not a review of any named provider.
The team
Castle’s web team, led by Matt, our Head of Web Development, works in the same Liverpool studio as our SEO, paid media, social and video specialists. Your site is planned with the people who will send it traffic, and they stay involved after launch.
Further reading
Why your website is holding back your digital marketing, even if traffic looks fineWhy many websites quietly hold back digital marketing performance in 2026, even with strong traffic, and what UK businesses can fix.Read article
10 Tips for Web Design That Drives SalesEvery owner of a business wants a website that inspires visitors to make contact or buy something. This is called conversion when your lead converts to…Read article
How to create a website design briefCreating a website design brief for your website can be tough, especially if you do not know where to start. We have years of experience in this market and…Read article
Essential Elements Every Homepage Should HaveIf you’re thinking about redesigning your site or are unsure how to produce more leads from your site, then often, a great way to do this is to start with…Read article
Some Really Good Reasons Why You Shouldn’t Build Your Own WebsiteThe idea that everyone can create a cheap, easy, instant business solution such as a website sounds too good to be true, and that’s because it is. There are…Read article
4 web design tips to increase your salesWeb designs are very important in increasing our sales because they don’t only determine how your website looks but also a number of other features.Read articleRelated services
One Liverpool team runs every channel, so adding a service means one plan and one report, not another agency.
Stores built to sellShopify DevelopmentShopify and Shopify Plus stores designed, built, migrated and optimised.Explore the service→
Outrank your competitorsSEOTechnical SEO, content and links that compound into enquiries.Explore the service→
Omnichannel enquiries for service businessesLead GenerationPaid social, PPC, landing pages and CRM for businesses that sell by enquiry.Explore the service→
Omnichannel growth for online storesEcommerce MarketingAds, email, SEO and CRO run as one growth plan for online stores.Explore the service→Questions
It depends on the platform, the number of page templates, integrations and how much content and migration is involved, so we scope every project individually rather than quote a one-size price. Book a free website review and we will tell you what your site needs and what it would cost before you commit to anything.
A typical bespoke build runs to around ten weeks from discovery to launch: two weeks of discovery and UX, around three weeks of design, and four to five weeks of build and testing. Large catalogues, complex integrations or a lot of content migration take longer. You get a timeline with the proposal.
Most ecommerce brands are best served by Shopify; content-led service businesses usually suit WordPress; WooCommerce makes sense when content and commerce are equally important or you need unusual product rules; BigCommerce suits large catalogues and B2B. Because we build on all four, we recommend the one that fits your business rather than the one we prefer.
Not if the migration is planned properly. We crawl the old site, map every URL that has rankings or links to its new home with 301 redirects, carry over titles, content and structured data, and monitor rankings and Search Console closely after launch. Most ranking losses after a redesign come from skipped redirects, which is why migration is part of every build.
Yes. You review and sign off wireframes, designs and the built site, and we offer unlimited post-build revisions, so the site you launch is the site you wanted.
We design and test against WCAG 2.2 AA: colour contrast, keyboard navigation, screen-reader support, labelled forms and alt text. It matters commercially as well as legally. WebAIM’s 2026 study found detectable accessibility failures on 95.9% of the top million home pages, and UK households with a disabled person hold an estimated £446bn a year in spending power.
Often, yes. Send us the site you have now and we will tell you honestly whether it needs a rebuild or a set of targeted fixes to speed, UX and conversion, and which of the two will make you more money.
Yes. Every site is built on a content management system your team can use to edit pages, add products and publish articles, and we show you how before launch. If you would rather we handle updates, we can.
Yes. Ecommerce stores get 256-bit SSL certificates as a minimum and PCI Level 1 compliant payments, we follow over 150 security protocols, and self-hosted sites are placed on a dedicated VPS with backed-up servers in three separate locations. Shopify and BigCommerce stores run on those platforms’ own secure hosting.
No. We are based at 17 Mann Island in Liverpool and are always happy to meet in person, but we design and build websites for clients across the UK, the US and Europe.
Free website review
We will tell you whether it needs a rebuild or just a fix, and which of the two makes you more money. You will also see how it scores on speed, Core Web Vitals and accessibility today.
