Shopify Plus Agency UK: Builds, Migrations and B2B, Plus Straight Advice on When Plus Is Worth It

Shopify Plus is Shopify’s top plan for larger and faster-growing brands. It runs on the same hosted platform as every Shopify store, so Shopify still handles hosting, security and updates. On top, it adds deeper checkout customisation, custom Shopify Functions, native B2B wholesale tools, extra expansion stores, more markets and locations, automation tools and priority support.

Yes, but it is smaller than most people expect. The storefront, themes and admin are the same. The difference sits underneath: Plus lets you customise checkout and write custom back-end logic, run native B2B with company accounts and price lists, open expansion stores, and get priority support. If your problems are about how the store looks, standard Shopify is usually enough.

It is worth it when a Plus feature solves a problem that is costing you money: wholesale buyers ordering by email, checkout rules you cannot build, several regional stores to run, or app fees piling up to fake what Plus does natively. It is not worth it just because revenue grew. Plenty of brands sell a lot on standard Shopify and should stay there.

Upgrade when you hit a real limit, not a revenue milestone. Common triggers are native B2B, custom checkout logic, needing more than one store for different regions or brands, needing more locations or markets than your plan allows, or wanting priority support during big trading peaks like Black Friday. If none of those apply, spend the money on the store instead.

Advanced is the top standard plan: better reports, more staff accounts and lower card rates than the plans below it. Plus is a separate enterprise plan on a contract. Plus adds custom checkout work, custom Shopify Functions in your own apps, native B2B, expansion stores, unlimited staff accounts and priority support. Check Shopify’s current plan table for exact limits.

For most UK direct-to-consumer brands, yes. Shopify runs the hosting, security and updates, the app ecosystem is huge, and your team can change most things without a developer. It fits less well if you need very complex product configuration or pricing logic that fights the platform. That is a case-by-case call, and it is exactly what a scoping call is for.

Shopify sets the Plus fee, not agencies, so read the current figures on Shopify’s own Plus pricing page. The shape is this: a contract on a one-year or three-year term, a fixed starting fee for standard setups, and for bigger or more complex businesses a variable platform fee based on revenue and business model. Card processing rates vary by country.

Because it is priced for businesses where the features pay for themselves: native B2B, custom checkout logic, several stores, higher API limits, priority support and a formal uptime commitment. For a brand that needs those, Plus often costs less than the apps and workarounds it replaces. For a brand that does not, it is simply a bigger bill for the same shop.

Five things: how much custom design you want, how much data and custom logic comes across in a migration, how many systems connect to the store (ERP, warehouse, email, reviews), whether you need B2B or several stores, and how much checkout and Shopify Functions work there is. We scope each one after a discovery call and quote a fixed price per stage.

It varies widely because the work varies widely. A theme refresh and a replatform from Salesforce Commerce Cloud with an ERP connection are completely different jobs. Most agencies quote fixed-scope builds plus an ongoing support retainer. Be wary of anyone who quotes before seeing your catalogue, integrations and custom logic. We scope first and quote per stage.

If you use Shopify Payments, you pay card processing rates, which Shopify says vary by country. If you use a third-party payment provider instead, Shopify adds its own transaction fee on top of that provider’s fees. Shopify’s Plus pricing page lists the current rates. It is worth modelling both routes before you choose a payment set-up for your UK store.

A Shopify Plus agency designs, builds, migrates and supports stores on the Plus plan. The useful ones do the engineering below the theme: checkout extensions, Shopify Functions, B2B set-up, multi-store and Markets configuration, and integrations with ERP and warehouse systems. A standard Shopify agency can build a beautiful theme. A Plus agency should also be comfortable with that back-end work.

No. FactoryJet does not hold Shopify Plus Partner status or any Shopify partner badge, and we will not pretend otherwise. We are an independent ecommerce engineering team that builds, migrates and supports Shopify and Shopify Plus stores. You do not need a badged partner to run a Plus store, but if your procurement requires one, Shopify’s partner directory lists them.

Yes, many. Names that show up often in UK searches include Charle, Imaginaire, Eastside Co and Swanky, and we list them on this page with a short note on each. FactoryJet also works with UK merchants. The right choice depends on whether you want a large accredited partner with a marketing arm, or a senior engineering team focused on build and support.

Yes. Plenty of our UK conversations start with a search for a Shopify Plus agency in London, and we work with London brands all the time. Shopify Plus work is done remotely, with video calls, a shared ticket board and a staging store you can click through, so we serve brands across the UK, from London to Manchester, Birmingham, Leeds and Scotland.

Yes. We start with an audit: theme code, apps, checkout extensions, Shopify Functions, integrations and anything still relying on old Shopify Scripts. You get a ranked list of risks and quick wins. Then we take over support once access is handed across as a collaborator account. If the previous agency has gone quiet, the store owner can grant us access directly.

Upgrading an existing Shopify store to Plus is a plan change, not a migration. Your products, customers, orders and theme stay where they are. You sign the Plus agreement with Shopify, and the Plus features switch on. The real work comes after: building the checkout, B2B, Functions or expansion stores you upgraded for. Plan that work before you sign.

We audit the Magento store first: catalogue structure, customer groups, B2B pricing, extensions and integrations. Then we map every piece to its Shopify Plus equivalent, whether that is native B2B, a Shopify Function, an app or custom code. Data moves in test runs, a full redirect map protects rankings, and we launch after testing real orders on a staging copy.

Yes. The method is the same for each: audit, map, test-migrate, rebuild custom logic, redirect, test and launch. What changes is where the complexity hides. WooCommerce stores often carry many plugins. Salesforce Commerce Cloud stores usually carry deep custom code and integrations. BigCommerce stores are often closest to Shopify in shape. We tell you which parts are hard after the audit.

You should not, if the migration is done carefully. Shopify uses its own URL patterns, so every old product, category and content URL needs a permanent redirect to its new address. Page titles, descriptions and content that already rank should come across too. Most traffic drops after a replatform come from missed redirects, so we treat the redirect map as a core deliverable.

Yes. Shopify offers its own store import tools, and there are third-party migration apps that copy products, customers and orders. They are useful for moving data. They do not rebuild custom logic, B2B pricing, integrations, redirects or design, which is where most of the real migration work sits. We use tools for the data and engineers for everything else.

Yes. Shopify B2B lets you sell to trade buyers from the same admin as your retail store. You set up each business as a company, with its own locations, buyer contacts, catalogues, price lists and payment terms. Full native B2B is built for the Plus plan. For bigger wholesale operations, it removes the tag-based workarounds many older Shopify stores still rely on.

It is Shopify’s current way to customise checkout safely. In plain terms, you add small approved building blocks to the checkout, such as a gift message box, a delivery date picker or a trust badge, instead of editing checkout code directly. Because the blocks sit on top of Shopify’s checkout, they keep working when Shopify updates it. Plus gets the widest set of options.

Shopify Functions are small pieces of custom code that change how Shopify’s back end behaves: custom discounts, hiding a payment method, renaming a delivery option or blocking a basket that breaks a rule. Shopify Scripts did similar jobs the old way. Shopify says that as of 30 June 2026, Scripts are deprecated and any still published have been switched off.

Usually not. Headless means your shop front is a separate app that talks to Shopify behind the scenes. It suits brands with a heavy content platform, complex interactive product tools or several front ends sharing one catalogue. If your goal is just a faster site, a well-built standard theme is simpler to run and easier for your team to edit. We will tell you which.

Yes. Shopify Markets lets one store show local prices in pounds, euros and other currencies, with local languages, domains and duty settings per market. Shopify’s Plus plan documentation lists up to 50 markets. When markets need genuinely different catalogues, stock or teams, a Plus expansion store can be the better fit. We help you choose between the two.

It depends on what you sell, to whom and how you ship, so confirm with your accountant. For low-value goods sent to EU consumers, the EU Import One Stop Shop (IOSS) lets VAT be collected at checkout and reported in one return. GOV.UK says businesses in Great Britain must use an intermediary to register. We build the store to show and collect it correctly.

HMRC looks at your business records, not at Shopify itself. Your Shopify sales are business income and belong in your accounts and VAT returns like any other sales. The practical risk is mismatched numbers, so make sure orders, refunds, fees and payouts reconcile with your accounting system. A proper integration with Xero, Sage or your ERP makes that routine instead of a monthly headache.

The ones UK brands usually run alongside it: ERPs such as NetSuite, Microsoft Dynamics 365 Business Central and Sage, order and stock tools such as Brightpearl and Linnworks, your third-party logistics (3PL) warehouse system, Klaviyo for email, Gorgias for customer service and a PIM for product data. If a system has an API, an integration is normally possible.

Shopify itself supports the platform, and Plus includes priority 24/7 support from Shopify. Agency support covers your store: theme and app fixes, new checkout extensions and Functions, integration monitoring, peak-trading preparation and small improvements, from a named team with a written log of every change. We run that as a monthly support retainer, with the same engineers each month.