How to build an e-commerce website, step by step
By Austen Jones, York Apps · Updated 8 July 2026
Building an e-commerce website means choosing a platform, designing a storefront that builds trust, connecting secure payments and shipping, and testing it properly before launch. This guide walks a UK business through the whole process, what each stage involves, and roughly what it costs — whether you build it yourself or have it built for you.
At a high level there are five stages: secure a domain, choose a platform, design and build the store, set up payments and shipping, then test and launch. The order matters — decisions early on (especially the platform) shape everything that follows.
1. Choose a domain and name
Pick a short, memorable name that reflects your brand and is easy to spell aloud. Register the .co.uk and, ideally, the .com. Keep it consistent with your social handles so customers find you easily.
2. Choose an e-commerce platform
This is the biggest decision. Hosted platforms (like Shopify) handle the technical side for a monthly fee; self-hosted options (like WooCommerce on WordPress) give you more control and lower ongoing fees but need more setup and maintenance. The right choice depends on your catalogue size, budget, and how much you want to customise.
| Platform | Type | Best for | Trade-off |
| Shopify | Hosted (SaaS) | Fast start, reliable, less upkeep | Monthly fee + transaction fees; less control |
| WooCommerce (WordPress) | Self-hosted | Control, flexibility, content + shop together | You manage hosting, updates and security |
| BigCommerce | Hosted (SaaS) | Larger catalogues, no transaction fees | Steeper learning curve |
| Bespoke build | Custom | Unusual needs, deep integration with your systems |
If your shop needs to plug into existing stock, accounting or a custom database, a bespoke or WooCommerce build usually integrates far more cleanly than a closed hosted platform.
3. Design and build your store
Good e-commerce design is mostly about trust and clarity: clean product pages, honest photography, obvious pricing, and a checkout that gets out of the way. Make sure it works well on mobile first — most UK shopping traffic is on a phone — and that pages load quickly.
This is where a professional web design partner earns their fee: turning a platform into a store that actually converts visitors into customers, rather than just looking presentable.
4. Set up payments and shipping
Offer the payment methods UK customers expect — cards, plus at least one digital wallet (Apple Pay / Google Pay) — through a reputable gateway such as Stripe or PayPal. For shipping, set clear rates and delivery expectations up front; surprise costs at checkout are the single biggest cause of abandoned baskets.
5. Test and launch
Before you go live, place real test orders end to end, on desktop and mobile: add to basket, check out, pay, refund. Check tax and shipping calculate correctly, confirmation emails send, and the site is secure (HTTPS everywhere). Only then announce the launch.
What does an e-commerce website cost?
A DIY hosted store can start from a low monthly fee plus your time; a professionally designed store is a one-off build cost plus hosting and maintenance; a bespoke, integrated system costs more but pays back where off-the-shelf platforms can’t do what you need. The cheapest option is rarely the cheapest over three years once your time and lost sales are counted.
Adding AI to your store
Once a store is running, AI can take on the repetitive work around it: a website chatbot that answers product questions and hands off to a person, automated order and enquiry triage, and follow-up on abandoned baskets. If that is of interest, see our guide to AI chatbots for your website and our AI automation services.
Frequently asked questions
How long does it take to build an e-commerce website?
A simple hosted store can be live in days; a professionally designed store typically takes a few weeks; a bespoke, integrated build takes longer. Product photography and content usually take more time than the build itself.
Which platform is best for a small UK business?
For a fast, low-maintenance start, Shopify is hard to beat. If you want your shop and content together and more control, WooCommerce on WordPress is a strong choice. If you need to integrate with existing systems, consider a WooCommerce or bespoke build.
Do I need a developer to build an online shop?
Not for a basic hosted store. You will benefit from professional help once you want a store that genuinely converts, integrates with your other systems, or handles a large or unusual catalogue.
How do I make my online shop secure?
Use HTTPS across the whole site, a reputable payment gateway (so you never store card details yourself), keep the platform and plugins updated, and back up regularly.
Related: Web design · Custom databases · AI automation services