Build & Migrate
Shopify Plus Development
Checkout, Functions, Markets and B2B.
(opens in a new tab) Plus only earns its licence fee if you use the parts of it nobody else can touch. We build checkout extensions, Shopify Functions, Markets and B2B for brands doing real volume, and for the stores we trade on ourselves.
The brands we build, run and answer for.
Certified, not badge-only We build and grow Shopify Plus stores for brands across the UK and the US.
Read the case studiesWe build on Plus for clients and for stores we own and trade on ourselves. Every build is held to a Core Web Vitals budget set before the design starts, because performance is cheap during a build and expensive to retrofit.
Our servicesHow we run a Shopify Plus project
One team, from scope to growth
No hand-off between a design agency and a build agency, which is where most of the cost and the compromises appear. The people who scope the work are the people who ship it.
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Scope
We start with the store you have and the numbers it already produces, not a blank page: what Plus is being asked to do, and which parts of it will earn the licence fee.
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Design
Drawn to a Core Web Vitals budget set before the first screen, so speed is built in rather than retrofitted. Every template is designed for the buyer, not the brief.
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Build
The developers who scoped it write it: checkout extensibility, Shopify Functions, Markets and B2B, wired to the ERP, 3PL and CRM you already run.
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Launch
Migrated without losing the traffic you have. Redirects, structured data and search handled so rankings move with you, not against you.
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Grow
Conversion testing, paid, email and support, proven on our own brand first. The people who built it are the people who keep it growing.
Build
New stores and platform migrations: the machinery, put in place by the people who keep running it.
Shopify Plus Agency UK
Shopify Plus development we test on our own brand first
One team runs our Shopify Plus development services, from the first build to the work that keeps a store growing: migrations off other platforms, Shopify Plus integrations with the ERP, 3PL and CRM, checkout and conversion, search, email and SMS. The developers who built a feature are the ones who fix it.
Powerlete is our own sportswear brand, and every playbook is tested there before it reaches a client. When a checkout change or a paid-social angle costs money, it costs ours first.
Shopify Plus web development
One partner for the storefront, the shop floor and the back office
Cream Cornwall sells luxury coastal homewares online and across three shops, in Falmouth, St Ives and Bath. The brief was never only the website: the shops, the domain and the company email all had to move with it.
We rebuilt the store on Horizon, ran the migration, set up Shopify POS in all three shops, and stay on as their consultancy partner.
B2B and wholesale
A trade store where every buyer sees their own prices
Black Sand came to us in 2022 with no storefront at all. Deals were quoted and closed in a WhatsApp thread, which works until prices move by buyer, by volume and by market, and have to stay confidential.
We built a trade store where each buyer sees their own catalogue and their own prices, with a qualifying funnel deciding who sees what. We still run its search, lead generation and paid ads.
Shopify enterprise
What Shopify Plus actually adds
Plus is the Shopify enterprise plan. What the Shopify Plus ecommerce platform adds over standard Shopify is a specific set of tools, and they only pay back the licence fee if a store is built against them.
On the storefront
Checkout extensibility
Custom fields, logic and branding on the one page every visitor has to pass through.
Shopify Functions
Discount, delivery and payment rules written as code, not bent out of apps.
Selling everywhere
Markets
Sell into multiple regions and currencies from one admin, priced and localised.
Native B2B
Wholesale catalogues, per-buyer price lists and net terms without a bolt-on.
Expansion stores
Up to nine storefronts for regions or brands, run from one organisation.
Under the hood
Higher limits
More API calls, unlimited staff accounts and the headroom real volume needs.
Grow
Subscriptions, paid media, email and conversion: the work that turns a launched store into a growing one.
Knack Snacks
UK and US markets, subscriptions
Shopify Plus developers
A snack brand built subscription-first
Knack Snacks sells high-protein chocolate snacks to customers in the UK and the US. People buy them again and again, which makes it a subscription business whether or not the store is built as one.
We built it subscription-first on Horizon, with the subscription choice inside the product page, then took on the paid ads, email and day-to-day support behind it.
Poppy Elder
Build, paid, email and support
Shopify Plus ecommerce agency
A funnel built for a decision that takes months
Poppy Elder makes bespoke engagement rings set with unusual stones. Nobody buys one on impulse: they spend months deciding, talk to a person and change their mind twice.
We built the store for that customer, then took on the paid ads, email and support on a retainer, so the follow-up is still there when they come back ready.
WUKA
Store build, then conversion testing
Shopify Plus Agency London
A store built to explain the product before it sold it
WUKA makes leak-proof reusable period underwear, a category that barely existed a decade ago. That gave the store a job most stores never have: answering how it works, how it fits and how many pairs someone needs, before asking anyone to buy.
We built the store, then ran conversion testing on it, so the pages doing the explaining were the ones that earned their place in a test.
Plus vs standard
What the licence fee actually buys
| Capability | Standard Shopify | Shopify Plus |
|---|---|---|
| Checkout customisation | Limited | Checkout extensibility |
| Discount and delivery logic | Apps | Shopify Functions |
| Multi-region and currency | Basic | Markets, native |
| B2B and wholesale | App or a separate store | Native B2B |
| Expansion storefronts | One | Up to nine |
| Staff accounts | Limited | Unlimited |
| Support | Standard | Priority, with a launch engineer |
Run
Retainers, support and the app stack: how a store stays fast and well after launch.
Nour Hammour
Build, CRO and ongoing support
Shopify Plus support
A luxury store we built and still look after
Nour Hammour makes leather and tailored outerwear in Paris. At that price point a brand is judged on its site before the product ever arrives, so the storefront has to feel the way the coat does.
We built it, tested it, and we keep it running day to day on a retainer, so the store is looked after by the people who know how it was made.
Reviews on the Shopify Partner Directory
Merchants, in their own words.
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From start to finish, they were incredibly easy to work with. They understood the brief perfectly and delivered to a very high standard. Communication was excellent throughout, with quick and clear responses to any questions I had.
Tacky And Upsetting Store build or redesign · April 2026
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The things [the team] have put in place and recommended for us have paid immediate dividend. We wish we had come in contact with [them] sooner.
ARTMARTIAL Store build or redesign · April 2026
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I can’t recommend [the team] enough, [they] helped us with everything from product design, supplier communication to website building and SEO. We were able to build a brand off the back of all [their] information and help.
Reveliér Studios Business strategy guidance · April 2026
How we work with you
Project build
A fixed scope with a launch date: a new Plus store, or a migration from Magento, WooCommerce or Salesforce, designed, built and shipped.
Fixed scopeGrowth retainer
A standing team for design, development, CRO, paid and email on a monthly plan built around your roadmap. What Poppy Elder, Knack Snacks and Nour Hammour run with us.
MonthlyConsultancy partner
You have your own developers; we advise on architecture, performance and the platform decisions, and step in where it helps. What Cream Cornwall and Caorunn run with us.
AdvisoryIs this the right thing to buy from us?
Worth a conversation
- You are on Plus and using none of it
- Checkout is the thing holding conversion down
- A second or third market is on the roadmap
- Wholesale runs on spreadsheets and goodwill
Probably not this, yet
- Under about a million a year in sales and growing steadily
- The standard plan is not yet in your way
- You want a redesign more than a rebuild
- Nobody internally owns the store
Keep reading
Everything around a Shopify Plus build
More of what we build
Migrating to Shopify Plus
Read before you decide
The brands behind the stores we build and run.
Partners
Tools we have already run on our own stores
The apps around a Shopify store decide as much as the theme does, and choosing between thousands of them is most of the work. We are a Shopify Plus Partner and we integrate the tools that sit around the platform. Every one of them runs on our own two stores before it reaches a client, so the recommendation you get comes from having paid for the thing and lived with it. When a brand already runs a stack that works, we integrate with it rather than rebuilding it to suit us.
How we use them
Straight answers
Are you a Shopify Plus agency, or a Shopify Plus development company?
Both words describe the same team, as would a Shopify Plus development firm or a Shopify Plus web development company. We are a Shopify Plus development agency: the people who scope the work are the people who write it, and there is no account manager between you and them.
What Plus-only features do you actually build against?
Plus is the Shopify enterprise plan, and what the Shopify Plus ecommerce platform adds is checkout extensibility, Shopify Functions, Markets, B2B, and the higher API limits that make a real integration possible. If a piece of work does not need one of those, we will tell you it does not need Plus.
Do your Shopify Plus developers handle design as well as build?
Yes. The same team covers Shopify Plus web design and development, so there is no handover between a Shopify Plus design agency and a build agency, which is where most of the cost and most of the compromises appear. Your Shopify Plus designer and the developer who builds the store work on it together from the first sketch.
Is a Shopify Plus ecommerce design agency different from what you do?
Only in emphasis. A Shopify Plus ecommerce design agency leads with the look; we lead with what the store has to do and design it to do that. The deliverable is the same store.
Can you work as our Shopify Plus web designer on an existing theme?
Yes, and often that is the cheaper answer. If the theme is sound we will extend it rather than sell you a rebuild you do not need.
Can you migrate us to Plus without losing search rankings?
Every old URL is mapped to its new home before launch and we hold the redirect map ourselves, rather than leaving it with a platform that will not be there afterwards.
How long does a Shopify Plus build take?
Most run eight to sixteen weeks depending on how much of the catalogue and how many integrations come with it. We work in two-week increments on a staging theme, so you see it moving rather than waiting for a reveal.
Do you work with US brands as well as UK ones?
Yes. We build from London for brands across the UK and the US, and quote and invoice in either currency.
What happens after launch?
The same people stay on it. Support, monitoring, Shopify Plus automation in Flow and the next round of work run as a retainer, and you keep the developers who built the store rather than meeting a new team.
Tell us what the store needs to do
Send the store URL and what is in the way. We reply personally, and if the honest answer is that you do not need this yet, that is the reply you get.
Stores we build and grow
Start a conversation
Talk to the people who would build it.
Book a call or send a note. We will come back with what we would change first, what it would take, and whether we are the right people to do it.
Get in touch