Ecommerce Development for UK Brands That Sell on Every Channel
FactoryJet is an ecommerce development agency for UK brands. We build fast, conversion-first stores on Shopify, WooCommerce, Magento, and custom or headless stacks, and you own every line of code when we hand it over. Built to rank in Google and to show up when AI tools recommend where to buy.
Ecommerce development is the work of planning, building, and integrating an online store: product pages, cart, checkout, payments, and stock, so it actually converts visitors into customers. In 2026 it also means structuring that store so it shows up correctly when AI tools like ChatGPT or Google AI Overviews answer shopping questions, not only when someone searches Google directly.
For years, ecommerce development meant one thing: get the store live, make it look sharp, and hope the traffic finds it. That is no longer enough. Shoppers now compare products inside a chatbot before they open your site, and Google can answer a buying question without a click at all. A store built today has to convert the visitor who lands on it, and earn a mention from the AI tools deciding where that visitor should go next. A good ecommerce development company now builds for both from day one.
Retail is moving online, and buyers now ask AI before they buy
The shift to online retail in the UK is not slowing down. The Office for National Statistics reported that online sales made up 28.7 percent of all UK retail spending in March 2026, up from 28.2 percent the month before. Close to three in ten retail pounds now change hands on a screen rather than a till, and that share keeps climbing.
At the same time, the way people shop online is changing. Ofcom found that 54 percent of UK adults now use AI tools such as ChatGPT, Copilot, or Gemini, up from 31 percent in 2024. A growing number of your customers are asking one of those tools to compare products or recommend a store before they ever load a search engine. A store that only performs well on Google is optimised for half the buyer journey.
That is the gap FactoryJet builds for: a store fast and clear enough to convert the visitor in front of it, and structured well enough to be the one an AI tool recommends before that visitor even arrives.
Senior engineers, not a rotating cast of juniors
Plenty of agency work gets handed to junior developers once the sales call ends, built from the same template as the last five projects. That is how so many stores end up looking and behaving alike. We do it differently. Senior engineers write the actual code on your store, and the founder stays involved on every build, not just the pitch.
We have delivered 500+ projects for real ecommerce brands across the UK, the US, the UAE and India, and the standard does not drop because a project is smaller. You get the same code quality, the same review, and full ownership of everything we build, on Shopify, WooCommerce, Magento, or a custom stack.

Shopify, WooCommerce, Magento, or custom: we build all four properly
Whether you are searching for an ecommerce web design agency or a specific platform partner, the right choice depends on your catalogue, your team, and where you plan to sell, not on which one we happen to prefer. Here is how we think about each.
The fastest route to a reliable, well-supported store, and the platform most of our shopify development agency work happens on. Strong app ecosystem, solid checkout, and a straightforward path to Shopify Plus once you outgrow the standard plan.
Best for: DTC brands, growing catalogues, teams who want less to maintain.
Ecommerce built on top of WordPress, which suits brands that already publish a lot of content or need full control of hosting. Our woocommerce development work focuses on keeping it fast, since Woo can get sluggish without real performance engineering behind it.
Best for: content-heavy brands, teams already invested in WordPress.
Still the right call for complex, high-SKU catalogues and multi-store setups that need deep customisation. As a magento agency we mostly meet this platform on migrations and replatforming, where a business has outgrown a simpler tool.
Best for: large catalogues, multi-store or multi-currency operations.
When your business logic, integrations, or performance needs do not fit a template. Custom ecommerce built on a headless stack gives you full control of the front end while keeping a proper commerce engine underneath.
Best for: complex B2B, unusual checkout flows, brands with real engineering needs.
Six things every FactoryJet ecommerce build includes
No build skips these, regardless of platform or catalogue size.
- 01
Platform selection matched to goals
We do not default to our favourite platform. We look at your catalogue, integrations, and team before recommending Shopify, WooCommerce, Magento, or custom, and we will tell you if a simpler option saves you money and hassle.
- 02
Conversion-first product and checkout design
Product pages and checkout built to remove friction, not just look good in a portfolio. Clear pricing, trust signals, and a checkout that does not lose people at the last step.
- 03
Payments, stock, and CRM integration
Your store connected properly to the systems that already run your business: payment providers, inventory and stock, and whatever CRM or email tool your team lives in.
- 04
Mobile-first performance engineering
Most of your traffic is on a phone. We build and test for mobile first, targeting genuinely fast Core Web Vitals rather than a score that only holds up on a fast desktop connection.
- 05
On-page and technical ecommerce SEO
Category and product pages structured to rank, plus the technical foundation, site speed, crawlability, structured data, that Google and AI engines both need to trust a store.
- 06
Full code handover with a walkthrough
When we hand the project over, you get the full codebase and a proper walkthrough of how it works, not just a login and a wave goodbye.
FactoryJet vs a typical Shopify agency vs a template or DIY store
From first call to launched store in four stages
- 01
Discovery & platform fit
We look at your catalogue, integrations, and goals, and recommend the platform that actually fits, not the one we push on everyone.
- 02
Design & build
Conversion-first product pages, checkout, and design work, built by senior engineers on the platform we agreed on.
- 03
Integration & QA
Payments, stock, CRM, and any other systems connected and tested properly, on real devices, before anything goes near customers.
- 04
Launch & handover
Your store goes live, you get the full codebase and a walkthrough, and we stay close for the weeks right after launch.
UK brands whose stores need to work harder
Ecommerce development pays off fastest for businesses whose stores carry real weight in the business. Three groups make up most of our work.
DTC and consumer brands
Brands selling direct to consumers who need a fast, trustworthy store and a checkout that does not leak sales. We build for conversion first, brand second, because a beautiful store that does not sell is not doing its job.
B2B and wholesale brands
Businesses selling to other businesses, often with account pricing, bulk ordering, or a quote process layered on top of a normal storefront. We build the commerce logic B2B actually needs, not a DTC template with a login wall.
Scaling multi-channel retailers
Brands selling across their own site, Amazon, and marketplaces like TikTok Shop, who need a store and stock system that stays in sync everywhere they sell.
Businesses are already searching for a Shopify development partner. Most agencies still read like a template
Search demand for ecommerce development help in the UK is real, and it goes well beyond one keyword. "Shopify development partner" alone draws thousands of searches a month from businesses looking for exactly what FactoryJet does: a team to build and stand behind a store, not just a freelancer for hire.
Terms like "ecommerce consultant" and "magento agency" are lower volume but easier to win outright, and we already write for both. This page exists to answer that demand properly, for brands in London, Manchester, Birmingham, Leeds, and across the UK, with the same senior team on every account.
UK ecommerce development and Shopify agencies worth knowing
We would rather tell you the truth than pretend we are the only option. Here are UK agencies doing real ecommerce build work, including us. Talk to a few and pick the fit.
- 1
FactoryJetThat is us
That is us. An AI-native ecommerce development agency building conversion-first stores on Shopify, WooCommerce, Magento, and custom stacks, with full code ownership handed over on every project.
- 2
Charle
A Shopify specialist agency based in Bristol, known for clean, conversion-focused Shopify builds for DTC brands.
- 3
Chilliapple
A long-established Shopify Plus agency working with larger UK retailers on migrations and enterprise commerce builds.
- 4
Juno Ecommerce
A Shopify and Shopify Plus agency built specifically around ecommerce growth, design, and conversion rate work.
- 5
Propeller
A commerce-focused digital agency handling Shopify builds and wider ecommerce projects for UK brands.
- 6
Blue Frontier
A UK Shopify Plus agency working with retailers that need enterprise-grade builds and ongoing support.
Agencies named from live UK search results for ecommerce development terms, July 2026. Listing is not endorsement, and we are one option among them.
What shapes an ecommerce development engagement
We do not sell one-size ecommerce packages, because a ten-product launch on Shopify and a two-thousand-SKU B2B replatform on Magento are not the same job wearing different branding. What actually shapes the work is your product count, how many systems you need connected, and how custom the design and checkout need to be.
A brand moving off a template onto Shopify with a clean catalogue often needs mostly design and integration work. A business replatforming from an ageing Magento or custom system needs migration planning first, so nothing breaks and no rankings get lost in the move. We scope it after a short call, so the plan matches your store rather than a generic tier.
Ecommerce development questions UK founders actually ask
Getting started
How much does it cost to build an ecommerce website?
There is no single number, because a five-product DTC launch and a two-thousand-SKU B2B catalogue with ERP integration are different jobs. What sets the scope is product count, the platform, how many systems you integrate (payments, stock, CRM), and how custom the design is. We scope every project after a call, so you know the shape of the investment before you commit to anything.
How long does it take to build an ecommerce store?
Timelines depend on the same things cost does: platform, product count, and integrations. A focused Shopify store with a clean catalogue can launch in a matter of weeks. A custom or headless build with ERP, multiple warehouses, or a B2B pricing layer takes longer, because there is more to design, integrate, and test properly before it goes live.
Do I own the code and the store when it's finished?
Yes, completely. When we hand a project over, you get the full codebase, admin access, and every credential involved, with no dependency on us to keep running. That is different from agencies that build on a locked template or keep hosting and code access under their own account. If you ever want to move to another developer, you can, because it is genuinely yours.
Can you build a store for B2B as well as DTC?
Yes. B2B commerce needs things a DTC template does not have: account-based pricing, bulk ordering, quote requests, and sometimes a login wall before customers see prices at all. We build that logic properly on Shopify Plus, Magento, or a custom stack, rather than bolting a password page onto a normal storefront and calling it B2B.
How do we get started?
Send your name and work email through the form on this page. The founder replies within 24 hours to book a short call, where we look at your catalogue, your current store if you have one, and what platform actually fits. That first conversation is useful whether or not we end up working together.
Platforms & tech
What does a Shopify agency do?
A Shopify agency designs, builds, and integrates a store on Shopify or Shopify Plus: theme and page build, apps and integrations, checkout and payment setup, and migration if you are moving from another platform. A good one also handles the unglamorous parts, page speed, tracking, and stock sync, that decide whether the store actually performs once it is live.
Is Shopify still worth it in 2026?
For most brands, yes. Shopify keeps investing in checkout, international selling, and AI-era shopping features faster than most alternatives, and the app ecosystem covers almost anything you need to bolt on. It stops being the right call once your catalogue, pricing logic, or integrations get complex enough that a template platform starts fighting you, which is when Magento or a custom build takes over.
Which platform should I use: Shopify, WooCommerce, Magento, or custom/headless?
It depends on your catalogue and your team. Shopify suits most DTC and growing brands who want less to manage. WooCommerce fits businesses already built around WordPress. Magento earns its keep at real scale, large or multi-store catalogues. Custom or headless is for business logic that does not fit any of the three. We recommend based on your situation, not on which platform we prefer building.
Do you build Shopify Plus or headless commerce?
Yes, both. Shopify Plus makes sense once a standard Shopify plan starts limiting you on checkout customisation, wholesale, or the volume of orders you process. Headless commerce, where the front end is decoupled from the commerce engine, suits brands that need a fully custom experience or want to publish the same catalogue across a website, an app, and other channels from one source.
Do you handle payments, stock, and CRM integrations?
Yes. Every build connects to the systems that already run your business: payment providers like Stripe or Shopify Payments, stock and inventory tools, and whatever CRM or email platform your team uses day to day. We would rather connect your existing tools properly than force you onto new ones just because they are easier for us to set up.
Design & conversion
Will my store be fast and mobile-first?
That is the standard, not an add-on. Most ecommerce traffic now arrives on a phone, so we design and test for mobile first and target genuinely fast Core Web Vitals rather than a score that only holds up in a lab. A slow store loses sales quietly, one abandoned cart at a time, long before anyone complains about it.
Can you build product pages and a checkout that actually convert?
That is most of the job. Product pages get built around the questions a buyer actually has: clear pricing, real photography, honest stock status, and trust signals in the right place. Checkout gets stripped of anything that is not necessary, because every extra field or unclear cost is a reason for someone to leave with a full cart.
Do you write the product copy?
We can, and often do, particularly for launch catalogues where consistent tone across hundreds of products matters. For very large catalogues we will usually train your team or a copywriter on the structure and then review it, because that scales better than one agency writing every single product description by hand.
Can you migrate my existing store without losing sales or rankings?
Yes, and this is where a lot of DIY migrations go wrong. We map every URL to its new address with proper redirects, keep your product and category pages structured the same way search engines already trust, and test the new store thoroughly before it goes live. Done properly, a migration should be invisible to your customers and your rankings both.
SEO & AI search
Do you also do ecommerce SEO?
Yes, and we build it in rather than treating it as an add-on. Category and product pages get structured to rank from the start: clean URLs, proper internal linking, schema, and content that answers what a buyer is actually searching for. A store built without SEO in mind almost always needs expensive rework later to fix it.
Will my products show up in AI shopping answers and AI Overviews?
That depends on more than good code, but the technical foundation has to be right first. We structure product and category pages with clean schema and clear, factual descriptions that AI crawlers can actually read, which is what makes a product eligible to be recommended by ChatGPT, Gemini, or a Google AI Overview in the first place. Nobody can guarantee a specific mention, but we build for it deliberately rather than by accident.
Can you redesign my store without losing my Google rankings?
Yes, if it is planned properly. Rankings usually get lost during a redesign when URLs change without redirects, page content gets thinned out, or page speed quietly gets worse. We map your existing pages before touching anything, carry the redirects and structured data across, and check rankings and traffic in the weeks after launch so we catch and fix anything early.
Working with us
Can I edit products and pages myself after launch?
Yes. We build on platforms with a proper admin, Shopify, WooCommerce, Magento, or a custom CMS, so you can add products, edit copy, and update pages yourself without calling us for every small change. We will walk your team through it at handover, and write it up so it still makes sense three months later.
Are you a UK agency, do you work outside London?
Yes. We work with brands across London, Manchester, Birmingham, Leeds, and everywhere in between, all handled remotely with regular video calls and the same senior team regardless of where you are based. Ecommerce development does not need someone sitting in your office, it needs someone who actually understands your catalogue and your customers.
Who actually does the work on my project?
Senior engineers, not a rotating cast of juniors billed at a senior rate. The founder is involved in scoping every project and stays close through the build, rather than handing you off entirely to an account manager after the sales call. That is deliberate. It is how the same standard holds whether the project is small or large.
What happens if I need changes after launch?
You can ask for changes any time, and because you own the code, you are never locked into asking only us. Most clients do keep working with us after launch, small fixes, new product types, seasonal campaign pages, because we already know the store. There is no minimum commitment to get that support, and it is scoped as it comes up rather than sold in advance.
Do you offer post-launch support?
Yes. We stay close for the weeks right after launch, when real customers using the store on real devices surface things a test environment never does. After that, most brands move to occasional support as needed: fixes, small builds, or a new integration, scoped when it comes up rather than billed as a standing retainer whether you need it or not.
Get a straight answer on your ecommerce build
Send your name and work email. The founder replies within 24 hours with a free store consult: what your build actually needs, which platform fits, and what to watch for if you are migrating. No spam, no obligation.