10 Best Shopify Development Agencies In The UK In 2026

I've compared 10 agencies that build and extend Shopify stores for UK DTC brands, whether the job is one custom feature on a store that already sells or a rebuild of every template.

Each entry describes the Shopify work an agency is strongest at and the type of brand it tends to suit.

TL;DR

• ConversionWise is the best Shopify development agency in the UK for DTC brands whose store has stopped converting or can't support the features on their roadmap. Our redesign team rebuilds templates from conversion data gathered across more than 4,000 brands, and our in-house developers hand-code the custom features and Shopify Plus work, guided by Optimo, the AI system we trained on past A/B test results.
• magic42 is a strong pick for retailers leaving Magento for Shopify Plus who need ERP connections and product configurators handled by a team fluent in Magento and Shopify.
• Futur Media publishes its starting prices, which helps smaller brands plan a budget before the first call: customised theme builds begin at £3,500 and fully custom themes at £7,500.

What are the best Shopify development agencies in the UK in 2026?

The best Shopify development agency in the UK for DTC brands is ConversionWise, as we design and code each template and custom feature from conversion data collected across more than 4,000 brands, then stay on after launch through a growth retainer.

All 10 agencies below take on Shopify or Shopify Plus development for brands selling in the UK:

How were these Shopify development agencies chosen?

I shortlisted agencies that sell Shopify development as a standalone service to UK brands and can show finished client stores, then compared them on four points:

• Who writes the code: whether the developers are on the agency's own team or parts of a build are handed to contractors.
• Shopify Plus depth: hands-on work with checkout extensibility, Shopify Functions, Shopify Markets, B2B setups and Hydrogen.
• Proof from live stores: named clients backed by published numbers, for example a conversion rate before and after a build.
• Support after launch: whether a warranty or retainer keeps the original team involved once the store is trading.

#1: ConversionWise
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ConversionWise is a Shopify redesign and development agency for DTC brands, running full store redesigns and in-house development as two services that draw on the same conversion data.

Brands choose a redesign when the store's design is holding sales back, and development when the store already converts but needs speed work or features the theme can't support.

DTC brands tend to contact us when they recognise one of these situations:

• Ad spend keeps rising while conversion rate and average order value refuse to move.
• A long list of installed apps now loads on every page, and mobile shoppers drop off before the product page has rendered.
• The business pays for Shopify Plus without ever having switched on checkout extensibility or Shopify Functions.
• The roadmap includes a bundle builder or subscription offer that the current theme simply can't handle.

Our team has worked with more than 4,000 brands, among them G FUEL, WD-40, Dutch Barn and VShred, and 354+ five-star reviews give ConversionWise a 4.9 rating.

Neither service comes as a set package: some brands start with their highest-revenue pages and expand later, while others keep our team on a monthly retainer.

Let’s go over what that means for our clients:

Full store redesigns built from conversion data

A ConversionWise redesign starts from your own evidence, meaning GA4, Clarity and heatmap data, customer interviews and voice-of-customer surveys, plus the test patterns our team has logged over thousands of experiments.

Any part of the store can be rebuilt, and most projects take in several of these templates:

• Homepages: trust and authority signals placed where first-time visitors look before they start browsing.
• Product pages (PDPs): the hero, reviews, answers to common objections and the upsell, arranged in the order your data supports.
• Collection and category pages: filters and layouts that help shoppers narrow a large range down to the right product.
• Cart and checkout: less friction at the step where most revenue is lost, plus mechanics that raise average order value.
• Subscription and account flows: sign-up, upgrade and cancellation journeys planned around customer lifetime value.
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• Funnel and landing pages: paid-traffic pages styled to match the store, so the ad click and the store feel like one brand.

Every ConversionWise development project runs through four stages:

1. Scope: we review what you need and audit your current setup, then agree a realistic scope and timeline. A single custom feature can take around a week, while a full theme build needs longer.
2. Design & Spec: larger builds are designed in Figma and shared with you first, and smaller features go straight to a technical spec. Coding starts only once you've approved the plan.
3. Build: our senior in-house developers hand-code each feature in modular Liquid and optimise it for page speed.
4. QA & Ship: every flow is tested across devices and browsers and put through a performance audit before it goes live, and you can move into a development retainer afterwards.

Each redesign is run by its own pod of five people, starting with an Analyst who works through the numbers and a Strategist who sets the priorities for the brief.

Our Designer, Copywriter and Developer then turn that brief into a live store, and the Copywriter writes from the language your customers already use in reviews and surveys.

Senior in-house Shopify development

Our Head of Development leads the ConversionWise in-house Shopify team from Serbia and has spent more than 12 years building on Shopify and Shopify Plus.

As our developers share projects with our CRO strategists and analysts, conversion data informs each feature before any code is written.

ConversionWise development work falls into six capabilities:

• Custom Theme Development: lightweight themes written from scratch in Liquid around your brand.
• Shopify Plus Customisation: checkout extensibility, Shopify Functions, Shopify Scripts, custom checkout flows and B2B setups.
• Theme Optimisation & Refactoring: we audit the existing codebase and rewrite the bloated parts until the same store loads noticeably faster.
• Custom Features & App Replacement: bundle builders, quiz funnels, subscription flows and loyalty mechanics coded directly into the theme, cutting the number of installed apps.
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• Integrations: Klaviyo, Rebuy, Recharge, Gorgias, Yotpo, Loop and Postscript connected without adding weight to page loads.
• Ongoing Development & Support: senior developers on retainer for monthly feature work and bug fixes, without the overhead of hiring in-house.

Development projects move through four stages called Scope, Design & Spec, Build, and QA & Ship.

Larger builds are designed in Figma first, whereas smaller features go straight to a technical spec, and either way, coding starts only after you approve the plan.

Before release, every feature is tested across devices and browsers and put through a performance audit.

A single custom feature usually takes around a week; a full theme build needs longer, and we give a realistic timeline at the scoping stage.

 💡On the front end, our developers work in Shopify CLI, Theme Kit, Tailwind and Alpine.js.

Checkout projects use Shopify Functions and Checkout UI Extensions, and headless builds run on Hydrogen, Remix, the Storefront API and GraphQL.

Optimo informs what gets built

Optimo is the proprietary AI system ConversionWise built from A/B test results gathered across more than 4,000 brands.

Our strategists use it to check which page mechanics and custom features have raised revenue for comparable stores.

We call the approach AI-informed and human-built: Optimo shapes the brief, but a senior developer writes every line of code.

Next to development and redesigns, we run ongoing CRO programmes and A/B testing through Convert.com, build landing pages and carry out post-click audits.

Brands that want a conversion-led starting point can also build on Surge, our own Shopify theme.

Client results from ConversionWise redesigns and development

Brands we've worked with on redesigns and development have reported these results:

• Goodlife: mobile conversion rate up from 2% to 4.5%.
• PuraU: store conversion rate up from 2% to 7%.
• Noobru: funnel conversion rate improved by 40%.
• PureSport: conversion rate up from the low 3% range to above 4% within three months.
• Rachel's Tea: conversion rate close to doubling.

On the development side, Dutch Barn's ecommerce team credits our developers with being responsive and quick to act, and Homemade Method values having the full stack handled by one team.

#2: magic42
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magic42 builds and migrates Shopify and Shopify Plus stores for B2B and B2C retailers, and its team works on Magento and Adobe Commerce too.

Most of its Shopify projects deal with the operational side of selling online, such as ERP connections and product configurators for retailers trading in several countries.

Services

• Liquid theme development for Shopify and Shopify Plus, with SEO practices built in from the start.
• Configurators for products sold by fabric, size or colour, plus bundles and multi-add-to-cart flows.
• Replatforming to Shopify for retailers currently running Magento, WooCommerce or a bespoke platform.
• An in-house connector app that links Shopify to ERP, WMS and accounting systems such as Prima Solutions and Brightpearl.
• Help selecting apps from the Shopify App Store, and custom app development when nothing suitable exists.
• Trade pricing tiers for B2B buyers, along with multi-store setups for international selling.
• Retainer support during UK hours, where theme code is version-controlled in GitHub and released through CI/CD pipelines.

#3: Cake Agency
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Cake Agency has delivered more than 200 custom Shopify builds, mostly for high-volume retailers, and fashion brands make up a large share of its Shopify Plus clients.

Cake's developers share an office with its designers and account managers, and clients can choose a fixed-price build or a fully bespoke project.

Services

• Custom Shopify and Shopify Plus development for high-volume retailers.
• Migrations to Shopify that keep existing SEO rankings intact.
• The Cake Shopify Theme, for brands that want a quicker route to launch.
• Native mobile apps built on top of an existing Shopify store.
• A 90-day warranty after go-live on every store the agency builds.
• Paid advertising and SEO from the same team for brands that want one partner.

#4: Actuate Digital
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For brands running Shopify next to Adobe Commerce or Magento, Actuate Digital covers both platforms as a Shopify Select Partner and an Official Hyvä Silver Partner.

Actuate's Shopify team handles front-end builds and Shopify Plus projects, while CRO and UX specialists in the same agency can take on optimisation work.

Services

• Front-end development across layouts, product display and the checkout flow, built to work on every device.
• Speed work that trims code and swaps heavy apps for lighter ones to bring load times down.
• Shopify Markets configuration for brands selling in multiple currencies and languages.
• Shopify Plus builds and migrations to Shopify from other ecommerce platforms.
• Training before launch, then maintenance and support packages once the store is live.
• A free CRO review and the NNP Success Workshop for brands planning optimisation work.

#5: Shero Commerce
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Shero Commerce holds Shopify Platinum Partner status, the highest tier in the Shopify Partner Program, and builds Shopify Plus stores for brands with complex operations.

Most of its projects combine a consumer storefront with B2B trade accounts and ERP connections, often across several international markets.

Services

• Shopify Markets setup for multi-currency pricing, localised checkout, VAT by region and cross-border shipping.
• B2B trade accounts that carry their own price lists and payment terms on the same store as the DTC site.
• ERP and OMS connections to NetSuite, SAP and Microsoft Dynamics, plus Klaviyo for marketing data.
• Migrations from Magento, WooCommerce, BigCommerce or a custom platform, where redirects are verified before launch.
• Headless builds on Hydrogen and development work using Shopify Functions.
• Post-launch support retainers, which 98% of Shero's clients keep once their project ends.

#6: Futur Media
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Futur Media, a founder-led Shopify development agency, publishes its prices: customised theme builds from £3,500, fully custom themes from £7,500 and Shopify Plus or complex builds from £15,000.

All of its code follows Shopify's native architecture, using Liquid and Metafields without page builders.

Futur puts its average conversion uplift after a Shopify redesign at 18%.

Services

• Technical discovery to pin down requirements and integrations before development starts.
• Development sprints with a client review at each milestone, usually over four to ten weeks.
• Custom Shopify apps and integrations with ERP and loyalty platforms.
• Core Web Vitals optimisation, with delivered stores loading in under two seconds on average.
• Shopify migrations, CRO and SEO for brands that need more than a build.
• Ongoing development retainers that keep the same team on the store after launch.

#7: MageCloud
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MageCloud designs and develops custom Shopify stores for UK retailers and keeps the same team on each project after launch for ongoing support.

UK VAT rules and GDPR compliance are configured as standard in MageCloud's builds, as are UK payment gateways.

Services

• Bespoke Shopify themes and storefronts designed mobile-first.
• App development and third-party integrations for features Shopify lacks out of the box.
• Shopify Plus configuration aimed at high-volume retailers trading in the UK.
• Moves to Shopify from Magento, WooCommerce and other ecommerce platforms.
• An SEO-ready store structure, starting with a free site audit.
• Dedicated Shopify developers on retainer once the store is live.

#8: Ronins
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Founders who would like to work with other founders can hire Ronins, a digital agency that plans each Shopify store around how its customers research and buy.

For brands wanting full creative control over the storefront, Ronins builds headless Shopify setups as well as standard stores.

Services

• Discovery into what the brand sells and who buys it before any design work begins.
• Custom Shopify design and build, or a template-based setup for a quicker launch.
• Headless Shopify setups for brands that want full creative control.
• Migration of product and customer data from WooCommerce, Magento or home-grown platforms.
• Post-launch improvements based on how visitors move through the store.
• Monthly updates and security patches handled by the Ronins team.
• SEO and digital marketing to bring new traffic to the store.

#9: Pixel Kicks
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Pixel Kicks develops Shopify stores alongside WordPress and WooCommerce sites as a web design and digital marketing agency within the PushON Commerce Group.

The agency organises Successify, a Shopify meet-up for ecommerce teams, and plans each build around how the store will connect to stock and fulfilment systems.

Services

• Discovery and technical planning, with the platform architecture mapped out before development.
• New Shopify store builds, as well as rebuilds of existing stores.
• Custom functionality and integrations with operational systems.
• Speed improvements for stores with large catalogues.
• Testing and quality checks, then launch with a period of aftercare.
• Shopify Plus support, migrations and monthly retainers.
• Shopify marketing, plus WordPress hosting for brands that keep a WordPress site next to their store.

#10: Luscious Leopard
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Luscious Leopard sells Shopify and Shopify Plus builds as four tiered packages named Basic Store, Advanced Store, Premium Store and Enterprise Store.

Each tier sets its own product upload allowance and post-launch support window, and the agency says it has built more than 650 websites for over 300 clients.

Services

• Brand-led UX and UI design for homepages, collection pages and product pages, laid out mobile-first.
• Custom theme development using section-based modular design and custom Liquid functionality.
• Up to 20 product uploads on Basic Store, rising to unlimited uploads on Enterprise Store.
• Payment, shipping and tax configuration, plus app setup and CRM or ERP connections.
• Schema markup and on-page SEO, along with Core Web Vitals optimisation.
• Post-launch support lasting 7 days on Basic Store and 60 days on Enterprise Store.

How do you choose the right Shopify development agency in the UK?

The right agency has already shipped work close to what your store needs, on your Shopify plan, and can name the people who will write and maintain your code.

These questions are worth putting to every agency on your shortlist:

• Redesign or development: rebuilding every template and adding a bundle builder are very different projects. Describing the problem first gives the agency a chance to recommend the right route.
• Shopify Plus experience: if you're on Shopify Plus, ask to see live examples of checkout extensibility or Shopify Functions work, since these features take specialist knowledge to configure.
• Custom code or apps: every app adds scripts to the storefront. Find out whether features like bundles are coded into the theme, and how page speed gets measured before launch.
• Migration process: for a move from Magento, WooCommerce or BigCommerce, the agency should walk you through how order history and URL redirects are transferred and checked before the old site goes offline.
• Code ownership: theme code kept in version control such as GitHub, with full access for your business if the relationship ends, protects you from being locked in.
• Post-launch support: warranties, fixed support windows and monthly retainers all appear on this list, so it helps to know what happens if a bug appears in the first three months.

Rebuild or extend your Shopify store with ConversionWise

Flat conversion rates and stalled order values on a store that looks finished usually point to how the templates are built, or to a feature the theme was never designed for.

At ConversionWise, both fixes are handled in-house: redesigns shaped by conversion data from more than 4,000 brands, and senior developers who hand-code custom features and Shopify Plus work.

Our development work is the strongest fit for DTC brands that:

• Need a custom feature, such as a bundle builder or subscription offer, built properly.
• Run a store that has slowed down under a growing app stack.
• Pay for Shopify Plus but haven't yet used Shopify Functions or checkout extensibility.
• Want senior developers on retainer without hiring in-house.

If your project is mainly a platform migration, or you're comparing agencies on hourly rate, we'll say so on the call and point you to a better-suited agency.

A free 30-minute discovery call is the first step, and during it we'll look through your Shopify setup and outline what we'd redesign or build first.

It helps to have a list of your installed apps and any planned features ready, so the call can get into specifics straight away.

Frequently asked questions
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What is the best Shopify development agency in the UK for DTC brands?

ConversionWise is the best Shopify development agency in the UK for DTC brands, as our redesign team and in-house developers build each store from conversion data collected across more than 4,000 brands.

Goodlife, for example, took its mobile conversion rate from 2% to 4.5% while working with us.

What is the best Shopify development agency in the UK for a full store redesign?

For a full store redesign, ConversionWise is the strongest UK option, because we rebuild each template from the brand's own analytics and customer interviews.

Noobru improved its funnel conversion rate by 40% after working with us, and redesign clients can keep testing afterwards on a growth retainer.

What is the best Shopify development agency in the UK for Shopify Plus brands?

Shopify Plus brands that haven't yet used checkout extensibility or Shopify Functions get the most value from ConversionWise, where our Head of Development brings more than 12 years of Shopify and Shopify Plus experience.

Our developers also handle B2B setups and custom checkout flows, and they build headless storefronts on Hydrogen when a project calls for it.

What is the best Shopify development agency in the UK for custom features like bundle builders?

Custom Shopify features are best built by ConversionWise, whose developers code bundle builders, quiz funnels, subscription flows and loyalty mechanics straight into the theme so the store relies on fewer apps.

Our Pick & Mix Bundle Builder raised average order value by 14% for the brand that commissioned it.

What is the best Shopify development agency in the UK for migrating from Magento?

magic42 is the best choice for retailers moving from Magento to Shopify or Shopify Plus, since the Birmingham agency works on both platforms and links Shopify to ERP and accounting systems through its own connector app.

Alan Paine's multi-site Magento store moved to Shopify Plus with magic42, and the project included a connection to the brand's ERP.

How long does a Shopify development project take?

At ConversionWise, a single custom feature can be ready in about a week, while a full custom theme typically takes several weeks, depending on how many templates and integrations are involved.

Futur Media quotes four to ten weeks for most custom projects, and Actuate Digital delivered RevitaLash's UK Shopify Plus store in six weeks.

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