Best Hyvä Theme Development Companies UK

Hyvä has become the standard choice for Magento 2 frontend development. The core theme became free and open source in November 2025, which removed the last major barrier to adoption. For UK Magento merchants still running on Luma, the question is no longer whether to move to Hyvä it is which agency to trust with the migration.

Choosing the wrong Hyvä developer causes problems that are expensive to fix. A poor migration breaks extension compatibility, damages Core Web Vitals mid-transition, and requires a complete rebuild to resolve. Choosing the right one delivers 90+ Lighthouse scores, a clean extension stack, and a frontend that is significantly easier to maintain long-term.

This guide was put together by the KiwiCommerce team Adobe Commerce Certified and Hyvä Bronze Partner developers based in Cheshire, UK, with 250+ eCommerce projects delivered since 2016. We have included the UK agencies and international teams most relevant to UK Magento merchants, and what makes each one genuinely worth considering.

Hyvä has split into two distinct products. Most guides skip this distinction. It matters before you brief any agency.

Hyvä Theme is the core frontend framework now free and open source since November 2025. It replaces Magento’s default Luma frontend with Tailwind CSS and Alpine.js. This is what most Magento stores migrating from Luma are implementing.

Hyvä Commerce is the paid platform suite that launched in July 2025. It adds Hyvä Checkout (a replacement for Magento’s default checkout), Hyvä UI Components, a CMS with live preview and scheduling, a modernised Admin Panel, and built-in image optimisation tools. It is not required for a Hyvä Theme migration; it is an additional layer for stores that want the full Hyvä ecosystem.

When briefing an agency for Hyvä work, be clear about which you need. Most Luma-to-Hyvä migrations involve Hyvä Theme only. Hyvä Commerce is a larger investment with a broader scope. Our Hyvä Commerce guide explains the full product suite in detail.

Hyvä is a specialist framework. It is not the same as general Magento development, and agencies that list it as a service without verified delivery capability can cause real damage to a live store.

The Hyvä partner programme is the most transparent way to assess an agency’s credentials. Hyvä awards partner status in four tiers Bronze, Silver, Gold, and Platinum based on verified implementation history. An official partner status means Hyvä themselves have assessed the agency’s delivery track record. An agency without any Hyvä partner status is relying on self-declared expertise.

UK-based or UK-timezone delivery is worth prioritising for a Magento migration project. Hyvä implementations on established live stores require careful extension auditing, staging environment testing, and rapid response if something goes wrong post-launch. A UK-based team available during your working day is practically important for this type of project.

Extension compatibility is the most commonly underestimated part of a Hyvä migration. Magento stores typically run a mix of third-party extensions, most of which were built for Luma. Each one needs auditing before migration begins to identify which are already Hyvä-compatible, which need a compatibility module, and which require custom bridging work. An agency that does not raise this in the scoping conversation has not planned the project properly.

Child theme structure matters for long-term maintainability. All design customisation should happen in a child theme rather than directly in the core Hyvä theme files. This protects your store from future Hyvä updates breaking your customisations. Ask any agency you speak to specifically how they structure their Hyvä builds. Our guide to creating a Hyvä child theme explains why this approach is the right one and how it works.

Post-launch support is not optional for a Hyvä build. As Magento versions update and extensions release new versions, Hyvä compatibility needs ongoing monitoring. An agency that hands over the project at go-live without a structured maintenance arrangement creates risk for your store over time.

1. KiwiCommerce

• Location: Handforth, Cheshire, UK
• Founded: 2016
• Hyvä Partner Tier: Bronze (official Hyvä partner)
• Other Certifications: Adobe Commerce Certified
• Services: Hyvä Theme builds, Luma-to-Hyvä migration, extension compatibility, Hyvä child theme, white label Hyvä, post-launch support

KiwiCommerce is one of a small number of UK agencies holding official Hyvä Bronze Partner status accreditation awarded by Hyvä themselves based on verified delivery history, not self-declared.

The team of 30+ certified developers each averaging ten years of experience handles the full scope of Hyvä work: new builds from scratch, Luma-to-Hyvä migrations on established live stores, extension compatibility auditing, Hyvä child theme development, and post-migration performance tuning. Every migration starts with a Magento Code Audit to identify extension compatibility issues, custom code that needs reworking, and performance bottlenecks before any migration work begins. This audit stage is what separates migrations that go smoothly from those that break things post-launch.

On performance outcomes, KiwiCommerce’s Hyvä builds consistently achieve 90+ Lighthouse scores confirmed on their own Hyvä Theme Development service page. This is the benchmark that distinguishes a well-executed Hyvä implementation from one that simply replaced the theme without addressing the underlying performance configuration.

Adobe Commerce Certified status alongside the Hyvä Bronze Partnership means the team understands Magento’s backend architecture as deeply as they understand the Hyvä frontend which matters for migrations where custom modules, B2B configurations, or ERP integrations need to remain intact and functional after the frontend is replaced.

For agencies needing Hyvä development delivered under their own brand, the team offers a fully structured White Label Hyvä Developer service with NDA as standard. Post-launch, 100+ stores are supported on active Magento support retainers ongoing maintenance rather than ad-hoc ticket support. Speak to the KiwiCommerce team about your Hyvä project.

2. Unified

• Location: London, UK
• Founded: Not publicly stated
• Hyvä Partner Tier: Silver (official Hyvä partner)
• Services: Hyvä theme builds, migration from Luma, Hyvä UI development, custom eCommerce design

Unified is a London-based digital agency and official Hyvä Silver Partner a tier above Bronze in the Hyvä partner programme, reflecting a verified history of Hyvä implementations. Their published Hyvä work covers full builds, migrations, and custom enhancements, with specific case study examples including an Adobe Commerce store with Hyvä and Storyblok CMS. Their team spans strategy, design, technology, and marketing.

Worth considering if: You need a London-based Hyvä agency with Silver Partner accreditation and a design-led approach alongside technical delivery.

3. Fluid Commerce

• Location: UK
• Founded: Not publicly stated
• Hyvä Partner Tier: Gold (official Hyvä partner)
• Other Certifications: Adobe Silver Solution Partner
• Services: Hyvä theme development, Adobe Commerce builds, B2B and B2C eCommerce

Fluid Commerce is a UK Hyvä Gold Partner and Adobe Silver Solution Partner, the highest Hyvä partner tier of any UK agency included in this list below Platinum. They exclusively build and support Adobe Commerce and Hyvä stores, meaning Hyvä is a core specialism rather than an additional service. Their work covers B2C, B2B, and DTC brands, and they describe themselves as a “problem-solving eCommerce agency” rather than a volume build shop.

Worth considering if: Your Hyvä project requires Gold-tier partner experience and you want a UK agency exclusively focused on Adobe Commerce and Hyvä rather than a multi-platform generalist.

4. Demystify Digital

• Location: UK
• Founded: Not publicly stated
• Hyvä Partner Tier: Bronze (official Hyvä partner)
• Services: Magento 2 and Hyvä development, digital strategy

Demystify Digital is a UK agency appearing on the official Hyvä partner listing at hyva.io/find-an-agency as a Bronze Partner. Their work covers Magento 2 development and Hyvä theme implementation. Their public-facing positioning focuses on demystifying complex digital projects for merchants, a practical, transparent approach that suits clients who want to understand what they are paying for rather than receive a black-box delivery.

Worth considering if: You want a UK Hyvä Bronze Partner agency that takes a transparent, client-education approach to digital projects alongside the technical delivery.

5. Chilliapple

• Location: UK
• Founded: Not publicly stated
• Hyvä Partner Tier: Bronze (official Hyvä partner)
• Services: Magento development, Hyvä theme implementation, eCommerce design

chilliapple is a UK digital agency listed as an official Hyvä Bronze Partner on hyva.io. They cover Magento development alongside Hyvä theme work, with a portfolio across retail and B2B sectors. Their positioning is as a full-service digital partner development, design, and digital strategy under one roof.

Worth considering if: Your brief needs a UK Hyvä Bronze Partner who can handle the full scope of a Magento project design, development, and strategy rather than development alone.

6. AYKO

• Location: UK
• Founded: Not publicly stated
• Hyvä Partner Tier: Bronze (official Hyvä partner)
• Services: Magento eCommerce development, Hyvä theme builds, B2C and B2B

AYKO is a UK Magento and Hyvä development agency, listed as an official Hyvä Bronze Partner. Their work covers Magento 2 builds and Hyvä implementations for both B2C and B2B sectors. They appear in UK eCommerce agency directories with a focus on structured, process-driven delivery.

Worth considering if: Your business needs a UK Hyvä Bronze Partner for a B2B or B2C Magento project with a process-led delivery approach.

7. Rock Technolabs

• Location: India (global delivery, UK clients)
• Founded: Not publicly stated
• Hyvä Partner Tier: Silver (official Hyvä partner)
• Services: Magento 2 and Hyvä development, custom eCommerce, performance optimisation

Rock Technolabs is a Hyvä Silver Partner with a global client base including UK merchants. Their team is India-based, which affects timezone coverage compared to UK-based agencies relevant for projects requiring rapid same-day communication during migration or post-launch. Their Hyvä work covers custom theme builds, Luma migrations, and performance tuning, and their Magento extension experience adds depth to compatibility auditing work.

Worth considering if: Your Hyvä project is clearly scoped and budget is a key constraint, and you are comfortable working with a well-credentialled offshore team rather than a UK-based one.

8. Ziffity Solutions

• Location: USA (global delivery, UK clients)
• Founded: Not publicly stated
• Hyvä Partner Tier: Hyvä partner
• Services: Custom Hyvä theme development, Luma-to-Hyvä migration, design translation to Hyvä

Ziffity is a US-based Magento and Adobe Commerce agency with documented Hyvä delivery capability. Their Hyvä work includes both new custom theme builds and Luma-to-Hyvä migrations, with a specific focus on translating approved design files into custom Hyvä themes useful for merchants who have their own design direction and need a development team to execute it. They work with medium and large-sized businesses and have experience across multiple sectors.

Worth considering if: You have a completed design file and need a technically capable Hyvä agency to build it accurately, without the agency driving the design direction.

The Hyvä partner programme is the most reliable way to assess an agency’s Hyvä credentials. It is maintained by Hyvä themselves at hyva.io/find-an-agency and updated as agencies complete verified implementations.

The tiers are Bronze, Silver, Gold, and Platinum. Progression through the tiers is based on verified Hyvä project completions and ecosystem contribution. KiwiCommerce holds Bronze Partner status verified by Hyvä based on their delivery history. For UK merchants assessing agencies, any official Hyvä partner status is a meaningful signal. An agency without any Hyvä partner tier is operating without that external verification.

Beyond partner tier, Adobe Commerce Certified status held by KiwiCommerce reflects backend platform depth. Hyvä frontend work is significantly more effective when the agency also understands what is happening on the Magento backend. An agency that knows Hyvä but not Magento deeply can build a fast frontend on a store with unresolved backend performance issues and the merchant sees mixed results.

The most common problems in Hyvä migrations are preventable. They happen when agencies skip the preparation stage and go straight to implementation.

Skipping the extension audit is the most expensive mistake. Extensions built for Luma do not automatically work on Hyvä. Some have Hyvä compatibility modules available. Others need custom bridging. A few may need replacing entirely. Finding this out mid-migration instead of before it starts is what causes delays and cost overruns.

Not using a child theme means future Hyvä updates can overwrite your customisations. The core Hyvä theme is updated regularly. If your design lives directly in the core theme files, every update creates a conflict. A correctly structured child theme keeps your customisations separate and update-safe. For a full walkthrough of how this works, our guide to making Magento 2 extensions compatible with Hyvä covers the technical approach.

Migrating to a live store without staging is the most avoidable risk. Every Hyvä migration should run in full on a staging environment with a copy of the production database and all active integrations before DNS is changed. The difference between a smooth go-live and an emergency rollback is almost always whether staging was done properly.

Going live without a performance baseline means you have no way to measure what the migration actually achieved. Run Google PageSpeed Insights on your current Luma store before starting, save the results, and compare them against the Hyvä build before go-live. Our guide to optimising a Hyvä website covers the post-migration performance work that keeps scores high after launch.

Every agency in this guide was assessed against their official Hyvä partner status as listed on hyva.io/find-an-agency, their UK presence or UK-client track record, their Magento platform depth alongside Hyvä frontend capability, and whether Hyvä is a genuine specialism or an add-on to a broader generalist offer.

UK Hyvä Platinum and Gold partners with teams significantly larger than KiwiCommerce Foundation Commerce, ZERO-1, Develo, Envisage Digital, Youwe UK were excluded. They are credible agencies but serve enterprise clients at a scale and budget level above most UK Magento merchants reading this guide. Similarly, global agencies dominating the Hyvä space Scandiweb, Aureate Labs, GoMage were excluded. Their teams are larger, their pricing reflects enterprise scopes, and their focus is not UK mid-market.

The Luma-to-Hyvä migration is one of the most high-return technical changes a Magento merchant can make. Lighthouse scores move dramatically. Mobile performance improves. Core Web Vitals move into the green. And with the core theme now free, the barrier is developer time rather than licensing cost.

The difference between a smooth Hyvä migration and a difficult one is almost always the preparation: a thorough extension audit, a properly structured child theme, a full staging environment, and a certified team that has done this before.

KiwiCommerce’s Adobe Commerce Certified and Hyvä Bronze Partner team has been delivering Magento projects since 2016. Every Hyvä project starts with an audit so you know exactly what you are getting into before the work begins. Get in touch with the KiwiCommerce team to discuss your Hyvä migration.