Do you need a Shopify Plus Partner for a Shopify Plus build?

No — you do not need to work with an official Shopify Plus Partner to build on Shopify Plus. Plus Partner status is a programme Shopify runs for agencies that hit certain volume and certification thresholds, and it brings direct channel benefits (partner-side support, early access to features, referral flow). It does not change what an agency can technically build. We have delivered multiple Shopify Plus stores, including B2B and custom checkout extensions, without that badge. The honest test is whether the agency has shipped Shopify Plus work you would be happy to inherit — not whether they appear in Shopify's partner directory.

How much does a Shopify Plus agency cost in the UK?

For a straightforward Shopify Plus build with a decent design and standard integrations, expect £35,000 to £80,000. For a full replatform from Magento, BigCommerce, or a bespoke stack, £80,000 to £250,000 is typical depending on catalogue complexity, B2B requirements, and checkout customisation. Ongoing retainers for engineering and optimisation usually sit between £4,000 and £20,000 per month. Agencies quoting below this range are either using templates with minimal customisation or are junior teams who will need senior rescue work within a year. Agencies quoting much above it are usually bundling paid media, content, or CRO — services you may or may not want included.

How long does a Shopify Plus project take?

A focused Shopify Plus build — new store, custom theme, three to five integrations, standard checkout — takes eight to twelve weeks from kickoff to launch. A replatform from Magento 2 or another enterprise stack, with migration of historic orders, customer data, SEO preservation, and a redesigned front end, usually takes sixteen to twenty-four weeks. B2B stores with customer-specific pricing, approval workflows, and ERP integration sit at the longer end. If an agency promises launch in under six weeks for anything beyond a template setup, they are cutting discovery or testing — which is almost always the work that prevents post-launch disasters.

What is the difference between Shopify and Shopify Plus?

Shopify Plus is the enterprise tier of Shopify. It adds checkout extensibility, Shopify Functions for customising core commerce logic, native B2B features, up to nine expansion stores included in the base price, significantly higher API limits, a dedicated launch manager, and premium support. Standard Shopify plans ship the same underlying storefront and checkout but cannot modify checkout behaviour, lack native B2B, and have lower API throughput. The practical dividing line is usually business-level: Plus is worth it once custom checkout, B2B, or multi-store operations become genuine constraints on growth. Under roughly £1m in annual online revenue, standard Shopify is almost always sufficient.

Can I switch Shopify agencies mid-project?

Yes, and it happens more often than the industry admits. The practical question is how painful the handover will be. Well-structured projects (version-controlled theme code, documented integrations, clean Shopify app installations, a defensible Figma, no orphaned custom apps) transfer in a week or two. Badly-structured projects (copy-pasted code in theme files, undocumented third-party services, abandoned custom apps still publishing to production, no design source of truth) can take a month just to reach baseline. Before switching, ask the new agency for a one-week technical audit of the current state — any agency that skips this step and quotes straight away is not being honest about the risk they are taking on.

Top UK Shopify Plus Agencies in 2026: An Honest Guide

Choosing a Shopify Plus agency in the UK is harder than it should be. The marketing pages all look the same. Everyone claims to be the best. Everyone has a Shopify badge — or several. Most shortlists you find online are either thin SEO exercises by the agencies themselves or paid placements dressed up as editorial.

This guide is a deliberate attempt to do the opposite. Below is an honest assessment of the UK Shopify Plus agencies worth considering in 2026, including ourselves mid-pack, with notes on who each one actually suits and who they do not. No ranking order — rankings imply precision that does not exist in this market — but the list is finite and curated. If an agency is listed, they are in the genuine shortlist for a UK merchant evaluating Shopify Plus partners this year. If they are missing, it is either because they are mostly operating outside the UK, their Shopify Plus work is thin, or we have not seen enough shipped work to write honestly about them.

First, a framework for how to think about this decision.

How to Evaluate a Shopify Plus Agency

Before agency names, the criteria. These are the questions that cut through the sameness of agency pitches and surface the differences that actually matter for a build.

Genuine Shopify Plus Specialisation

Many agencies list Shopify Plus among ten services. A genuine Shopify Plus specialist has a majority of active projects on Plus, understands checkout extensibility and Shopify Functions as code (not slides), and can speak to the practical limits of Shopify’s B2B features without checking a product page. Ask for the ratio of Plus projects to non-Plus projects in their last twelve months — anything under sixty percent means Shopify Plus is a claim, not a practice.

UK Presence and Delivery Model

Plenty of agencies pitching UK merchants are fronting UK-style branding over offshore delivery. That can work, but it is a different proposition with different risk. Ask who specifically will be on your project — where they sit, what their seniority is, how much of the build is delivered by UK-resident staff versus partner teams. Neither answer is disqualifying on its own. Ambiguity is.

B2B Competence (If You Need It)

Shopify Plus B2B has matured considerably in the last two years, but it still has genuine edges. If your business needs customer-specific catalogues, approval workflows, net payment terms, or complex tax handling across markets, you need an agency that has actually shipped production B2B on Plus — not one that has read the documentation. The difference is visible in discovery: specialists will walk you through the Plus B2B limitations; generalists will tell you everything is possible.

Named Case Studies with Metrics

Testimonials and logos are cheap. Case studies with client names, specific problems, and post-launch revenue or operational metrics are not. Any agency worth the shortlist has at least three named UK Plus case studies on its site with numbers. Anonymous case studies are a weaker signal — they tend to either be old work the client does not want associated with them or work small enough that the client would not grant case study approval.

Team Seniority and Retention

The single best predictor of project outcome is who is actually doing the work. Agencies with high senior-engineer ratios and low turnover ship calmer projects. Agencies that are mostly junior with a senior layer selling the work tend to miss deadlines and deliver technical debt. Ask how many years of Shopify Plus experience the senior engineer on your project has. Under three years is a risk; under five years on a complex B2B or replatform brief is a significant risk.

Partnership Status Clarity

Plus Partner, Klaviyo Gold, HubSpot Elite, ReCharge Pro — the badges stack up. Most are meaningful in their narrow domain, none of them alone tell you an agency will deliver well. Ask plainly: does being a Plus Partner change how you work, or is it mainly a marketing signal? Honest answers tend to be some of both. Agencies that cannot articulate the practical difference are reciting marketing.

With those criteria in mind, here is the list.

The UK Shopify Plus Agencies Worth Considering in 2026

Charle

Charle (London) is probably the most recognisable name on this list. Founded in the early 2010s, team size around thirty, full Shopify Plus Partner, and comfortably one of the most consistent design-led Plus agencies in the UK. Their work is visibly considered — the stores they ship look and feel like premium brands, and they have earned a reputation for treating the storefront as a product rather than a project.

Best for: direct-to-consumer brands where design quality and brand expression matter as much as the commerce layer underneath. Fashion, beauty, lifestyle, food and drink — they do these verticals fluently. Notable clients over the years have included a number of well-known UK DTC names, with case studies available on their site.

Honest caveats: Charle’s sweet spot is mid-market DTC with a clear brand identity. If you are a B2B manufacturer shipping twelve-thousand SKUs through a wholesale channel, they will not be the natural fit — not because they cannot do B2B, but because that is not where their pattern library and team experience accumulate. They are also not the cheapest option in the market; you are paying for design and brand thinking that many alternatives cannot match, and that premium is either worth it or it is not, depending on your priorities.

Swanky

Swanky (Exeter and London, with additional offices in Australia and France) is a Shopify Plus Partner with a clear specialism in premium lifestyle and luxury DTC. Team size around thirty. Strong on Klaviyo integration and retention-led commerce strategy as well as the build itself.

Best for: premium and luxury DTC brands where the storefront needs to feel editorial — skincare, apparel, wellness. Swanky’s portfolio leans heavily into brands where the commerce experience is expected to match a print magazine. They ship consistently on Shopify Plus and have a track record of complex international store rollouts for DTC brands expanding into new geographies.

Honest caveats: Swanky’s positioning is narrow by design. If you are building a mass-market store, a B2B platform, or a marketplace, they are not the obvious fit. Their editorial design sensibility is a strength for the brands they serve and a constraint for brands with different requirements.

Eastside Co

Eastside Co (Soho, London, with offices in Birmingham, New York and Hamburg) is one of the longest-tenured Shopify Plus agencies in the UK, founded in 2012. They advertise more than five hundred ecommerce projects delivered. Broader in remit than Charle or Swanky — they ship Plus, standard Shopify, and occasionally non-Shopify work. Team is visibly more execution-focused than design-led, which makes them a good fit for brands that already have design sorted.

Best for: merchants with established brand identity who need a delivery-focused Shopify Plus build. Their breadth means they tend to handle edge cases that purely design-led agencies stumble on — multi-market stores, unusual integrations, migration from legacy platforms. They also have a pragmatic approach to optimisation and support work post-launch.

Honest caveats: the scale and breadth that make Eastside strong on delivery can mean individual projects get less senior attention than a smaller agency might give. If you need a very hands-on senior engineer for the duration, confirm that explicitly in the pitch. Their design work is solid rather than distinctive — if brand differentiation through design is your priority, Charle or Swanky will likely suit better.

We Make Websites

We Make Websites (London) is an enterprise Shopify Plus agency with a heavier-weight delivery model than most on this list. Shopify Plus Partner with a track record of bigger-ticket Plus implementations, including replatforms from enterprise platforms and custom checkout builds. Their own domain authority is among the strongest in the UK Plus space, reflecting long years of consistent content and PR.

Best for: established UK and international brands replatforming from Magento, Salesforce Commerce Cloud, or bespoke enterprise stacks onto Shopify Plus. Their process is thorough; their delivery skews technical; and they are comfortable with the larger-budget, longer-timeline end of the Plus market.

Honest caveats: We Make Websites price and pace match enterprise expectations. If you are a Series A brand trying to ship an MVP in eight weeks, they are not the natural partner. Their strength is depth, not speed.

Rogue Digital

Rogue Digital — us — sits deliberately in the middle of this list because we are a specialist technical build partner, not a full-service Plus agency, and we would rather be honestly placed than flattered upwards.

What that means in practice: we build Shopify Plus stores where the engineering is the hard part. Custom checkout extensions with Shopify Functions, integrations with ERP and PIM systems, migrations from Magento 2 or bespoke platforms where SEO, historic orders, and customer data all need to survive, headless Hydrogen or Next.js storefronts where the content layer matters, and B2B stores with workflow logic that goes beyond native Plus features. Our founder spent seven years as CTO of a £200m ecommerce business, and the team is deliberately senior — fewer, more experienced engineers, no junior-heavy delivery model.

What we are not: a brand design studio, a Shopify Plus Partner at the time of writing (we have not pursued the badge because it does not change the work we ship), a paid-media agency, or a low-cost option. We do not do retainer-funded content calendars, PPC management, or generic Shopify theme customisation.

Honest caveats: if the storefront design is the heart of the brief and engineering is secondary, a design-led agency like Charle or Swanky is the better fit. If you need a single agency to handle build, paid, SEO, CRO, and email on a packaged retainer, Eastside Co or an integrated full-service agency will serve you better. We are the right partner when the technical complexity is what keeps you up at night and you want a senior team that will not hide behind junior delivery.

Cake Agency

Cake Agency (UK-based) is a Shopify Premier Partner with a portfolio of more than two hundred ecommerce builds and a long run of Plus delivery. Their positioning emphasises experience on the platform — a reasonable claim given the volume of work shipped. Strong on CRO and conversion optimisation alongside the build.

Best for: mid-market UK retailers wanting an experienced Plus delivery team with integrated CRO thinking. Their consistency across a large portfolio is a signal that their process works at scale — useful if you want predictability rather than bespoke approaches. They are a good fit when you know what you want built and you want it built well.

Honest caveats: a high-volume portfolio means their process is deliberately repeatable. If you are a brand that needs an unusual engineering or design approach, agencies with fewer but more distinctive projects may serve you better. Cake’s strength is competent, commercial delivery on a proven pattern.

Underwater Pistol

Underwater Pistol (UK) describes itself as an award-winning Shopify Plus agency combining technical and creative capability. Their portfolio spans ambitious DTC and retail brands with a notable emphasis on stores where the front-end experience is a differentiator.

Best for: brands that want creative storefront work and are comfortable with an agency that takes a point of view on design and experience. They are particularly strong on stores that have a narrative or interactive element to the product discovery journey.

Honest caveats: Underwater Pistol’s creative-led approach will not suit every brief. If you want a conservative, utility-first storefront that mirrors competitor patterns, their instinct is usually the opposite. That is a strength or a friction depending on what you need.

Juno Ecommerce

Juno Ecommerce (UK) is an award-winning Shopify Plus agency with a focus on ecommerce that combines design, build, and systems integration. Their work emphasises the operational side of online retail — connecting the storefront to the systems that keep the business running, including ERP, 3PL, and analytics platforms.

Best for: retailers whose complexity sits in the integration layer rather than the storefront layer. If your challenge is making Shopify Plus talk sensibly to a warehouse management system, an ERP, and a customer service platform, Juno’s pattern of work is well suited to that problem shape.

Honest caveats: Juno’s strength is commerce systems thinking rather than brand or editorial design. For brief-led brand experience builds, design-led agencies like Charle or Swanky are the more obvious choice.

A Final Note on Fit

The agencies on this list have all delivered Shopify Plus work that holds up. The differences between them are real, but they are differences of fit rather than quality.

Before choosing, shortlist three. Brief them identically. Ask each of them the same question: given the brief, what would you do differently from the other two? The answers will tell you more about each agency than any pitch deck will. Any agency that cannot answer that question honestly — because they are uncomfortable distinguishing themselves, or because they genuinely do not know the other agencies’ work — is not the right level of specialist for a Plus build.

If you want to dig further into the platform itself before choosing an agency, our complete Shopify Plus guide covers features, pricing, and trade-offs in depth. If you are migrating from Magento specifically, our Magento to Shopify migration guide will help you scope the work. If your build is B2B, the B2B on Shopify breakdown explains what the platform does and does not handle natively. And if you want to talk to us about a brief where engineering is the hard part, our Shopify services page explains how we approach this work.