WebAnts

(Shopify Plus · Enterprise Ecommerce · London)

Shopify Plus development
for brands ready
to scale.

WebAnts builds Shopify Plus stores for high-growth and enterprise brands — custom checkout extensibility, B2B wholesale portals, multi-market, and Shopify Flow automation. London-based. No deposit.

★★★★★ 4.9 on Google★★★★★ 5.0 on ClutchTop Web Designers 2025, DesignRush

What your Plus build needs

  • Custom checkout extensibility via Checkout UI Extensions
  • B2B wholesale portal with company accounts and tiered pricing
  • Multi-currency and multi-language via Shopify Markets
  • Shopify Flow automation for order routing and loyalty triggers
  • High-volume product catalogue with metaobjects
  • Dedicated Shopify Plus Merchant Success support access
  • POS integration for unified online and in-store
  • Third-party ERP and WMS integration via the Admin API

£50,000+

monthly revenue threshold where Shopify Plus starts to pay for itself over standard Shopify

40%

lower transaction fees on Shopify Plus vs standard plans for high-volume merchants

4.9★

WebAnts rating across Google, Clutch, Upwork

£0

deposit required — milestone billing from day one

Common problem

Outgrown standard Shopify

Customisation limits at checkout, multi-location inventory, and B2B pricing mean standard Shopify is costing you revenue the platform cannot recover.

Common problem

Checkout conversion bleeding revenue

Standard Shopify checkout is locked. Shopify Plus checkout extensibility lets you add custom fields, upsells, loyalty redemption, and branded steps that convert.

Common problem

B2B and wholesale still manual

Emailing price lists and processing wholesale orders by hand is unsustainable. Shopify Plus B2B portals automate company accounts, tiered pricing, and net payment terms.

Common problem

ERP and WMS not connected

Inventory discrepancies, manual fulfilment updates, and duplicate data entry are all symptoms of an ERP that is not integrated. Plus gives the API access standard plans do not.

What we build

Eight Shopify Plus capabilities.
All built in-house in London.

From checkout extensibility to ERP integration — every Plus feature scoped, built, and tested by the team you spoke to.

01

Custom Checkout Extensibility

Checkout UI Extensions, Checkout Branding API, and Shopify Functions to build a checkout that converts and reflects your brand — custom fields, upsells, loyalty redemption, and branded confirmation pages all possible.

02

B2B Wholesale Portal

Shopify Plus native B2B features: company accounts, contact-level roles, tiered pricing, custom catalogues per buyer, net payment terms, and draft orders — all managed inside your existing Shopify admin.

03

Multi-market & Multi-language

Shopify Markets for international expansion — localised pricing, currency, language, and domain per region. Markets Pro for landed cost calculation and import duty handling.

04

Shopify Flow Automation

Custom automation workflows built in Shopify Flow: order routing by SKU, fraud flag triggers, loyalty tier updates, inventory reorder points, and post-purchase engagement sequences.

05

ERP & WMS Integration

Connect Shopify Plus to NetSuite, SAP, Brightpearl, Cin7, Linnworks, or custom systems via the Admin API — bi-directional order, inventory, and customer data sync.

06

Shopify Functions

Serverless functions to customise discounts, payment methods, shipping options, and cart validation beyond what apps allow — fully programmatic, version-controlled, and deployed via CI/CD.

07

Metaobjects & Content Modelling

Structured content for complex product data, editorial pages, size guides, and localised content — all manageable by your merchandising team without headless complexity.

08

Performance & CWV Optimisation

Plus stores need to be fast. Custom Liquid or Hydrogen themes with 90+ Lighthouse scores, optimised third-party script loading, and image delivery via Shopify CDN.

Shopify Plus vs Standard

When to upgrade — and
what you unlock when you do.

Standard Shopify is excellent for early-stage DTC. Shopify Plus is the platform for brands that have outgrown it.

FeatureStandard ShopifyShopify Plus
Custom checkout UI✓ Checkout Extensions
B2B wholesale portal✓ Native B2B
Flow automation✓ Shopify Flow
API rate limits2 req/s10 req/s
Staff accountsUp to 15Unlimited
Shopify Launchpad✓ Included
Transaction fee0.5%–2%0.15% (own gateway)
Merchant Success✓ Dedicated manager

The ROI argument

Four ways Shopify Plus pays for itself.

WebAnts is a London-based Shopify Plus agency. We scope every project around measurable commercial outcomes — not just feature delivery. Here is where the return comes from.

Checkout conversion uplift

Checkout Extensions remove friction — custom fields, loyalty redemption, and one-click upsells that standard Shopify checkout blocks entirely.

B2B revenue capture

A proper B2B portal converts wholesale from a manual headache into a self-serve channel with tiered pricing, net terms, and per-account catalogues.

International expansion

Shopify Markets with localised currency, pricing, and language means your DTC store can launch in three new markets without a new Shopify plan.

Operations automation

Shopify Flow eliminates the manual order routing, inventory alerts, and loyalty updates your team handles today — freeing ops for growth, not admin.

“London fashion brand increases checkout conversion by 28% after Shopify Plus migration.”

A full Shopify Plus migration for a high-growth fashion brand — custom checkout Extensions adding a loyalty redemption block, a B2B portal for wholesale buyers, and Shopify Markets for EU multi-currency. Checkout conversion improved 28% within 30 days of launch.

View our work →
How it works

From idea to live site in four steps.

Milestone payments — you see progress weekly and own every deliverable the moment it's completed.

Discovery Call & Flat Quote

Every project starts with a free 30-minute call — no pitch deck, no jargon. We ask the right questions about your goals, your audience and your budget, then deliver a written flat-fee proposal within 24 hours. You know the full cost before we touch a single wireframe.

  • Free 30-minute strategy call
  • Digital brief and business goal analysis
  • Written flat-fee quote within 24 hours
  • No hourly rates, no scope creep surprises
  • Platform and technology recommendation included

Pricing

Flat written quotes.
No hourly surprises.

Every project gets a detailed written quote after a free 30-min discovery call. No deposit. Milestone payments throughout.

Migration

From £6,000

For brands migrating from standard Shopify or another platform to Shopify Plus.

  • Shopify Plus account setup and configuration
  • Theme migration with CWV optimisation
  • Checkout branding and basic Extensions
  • Product and customer data migration
  • Redirect mapping and SEO preservation
  • Two weeks post-launch support
Get a quote

Most popular

Custom Build

From £10,000

For brands building on Shopify Plus from scratch or doing a full rebuild.

  • Everything in Migration
  • Custom Liquid or Hydrogen theme
  • Checkout UI Extensions and Branding
  • Shopify Flow automation workflows
  • B2B portal configuration
  • Multi-market / Shopify Markets setup
  • Google Analytics 4 + enhanced ecommerce
Get a quote

Enterprise

From £18,000

For high-volume brands needing ERP integration, custom Functions, and ongoing support.

  • Everything in Custom Build
  • ERP / WMS integration (NetSuite, Brightpearl, Cin7)
  • Custom Shopify Functions
  • Metaobjects content architecture
  • POS integration
  • Dedicated project manager
  • Ongoing care plan (3 months)
Get a quote

Start a project

Free 30-min call.
Flat written quote.
No deposit.

Tell us about your store and your growth goals. We’ll review your current setup and send a flat written quote within 24 hours. No obligation.

No prepayment. We’ll reply within 4 hours (Mon–Fri, 9–18 GMT).

FAQs

Questions about
Shopify Plus.

  • When should I upgrade to Shopify Plus?

    Shopify Plus typically pays for itself once a store is generating £50,000+ per month in revenue. Below that, the standard plan's transaction fees and feature set are usually sufficient. The clearest signals to upgrade are: needing custom checkout functionality, running a B2B or wholesale channel alongside DTC, requiring Shopify Flow automation, needing higher API rate limits for ERP integration, or preparing for multi-market international expansion.

  • How much does Shopify Plus cost?

    Shopify Plus is priced on a revenue-share model with a monthly minimum — typically $2,300/month (around £1,800) or 0.25% of monthly revenue, whichever is higher. WebAnts's development fees are separate from the Shopify Plus platform fee. We provide a detailed breakdown of both in your written quote after the discovery call.

  • What is Shopify Plus checkout extensibility?

    Checkout extensibility refers to the suite of tools Shopify Plus merchants can use to customise the checkout: Checkout UI Extensions (add custom fields, upsells, loyalty blocks), the Checkout Branding API (fonts, colours, layout), and Checkout Metafields. These replace the legacy checkout.liquid file, which Shopify is deprecating. Plus checkout extensibility is what allows merchants to add custom functionality without modifying core checkout code.

  • What is the Shopify Plus B2B portal?

    Shopify Plus includes native B2B functionality: company accounts (a single company can have multiple buyer contacts), custom catalogues per company or contact, tiered pricing, quantity rules, net payment terms (Net 15/30/60), and draft orders. It replaces third-party wholesale apps and gives B2B customers a self-serve ordering experience on your existing Shopify storefront.

  • What can Shopify Flow automate?

    Shopify Flow is a no-code automation builder included with Plus. Common workflows we build: order routing by product tag or SKU to different fulfilment partners, inventory reorder point alerts, fraud flag escalation, loyalty tier updates based on lifetime spend, post-purchase tag-based email sequences, and B2B order approval workflows.

  • Which ERP systems can you integrate with Shopify Plus?

    We have integrated Shopify Plus with NetSuite, SAP Business One, Brightpearl, Cin7, Linnworks, and Mintsoft, as well as bespoke warehouse management systems via custom API connectors. If your system has an API, we can integrate it. We scope integrations individually based on the data flows you need — bring your system details to the discovery call.

  • How long does a Shopify Plus migration take?

    A migration from standard Shopify to Plus — including theme work, checkout configuration, and data migration — typically takes 4–6 weeks. A new Plus build from scratch takes 6–10 weeks. An enterprise build with ERP integration takes 10–16 weeks. We agree firm milestone dates in the proposal before work begins.

  • Will migrating to Shopify Plus affect my SEO?

    It should not, provided the migration is handled correctly. We audit all existing ranking URLs before migration, implement 301 redirects from old to new URL structures, preserve meta titles and descriptions, and monitor Google Search Console for crawl errors after launch. We do not launch until every ranking page has a confirmed redirect in place.

  • Should I use Hydrogen (headless) or a Liquid theme on Plus?

    For most brands, a custom Liquid theme on Shopify Plus is faster to build, cheaper to maintain, and performs excellently with modern optimisation techniques. Hydrogen (Shopify's headless React framework) is the right choice when you need maximum frontend flexibility, a custom design system that Liquid cannot achieve, or are building a multi-brand architecture from one Plus backend. We advise based on your specific requirements — not a default preference.

  • What are Shopify Functions and do I need them?

    Shopify Functions are serverless code extensions that run inside Shopify's infrastructure. They let you customise discount logic, payment method filtering, shipping option generation, and cart transformation beyond what apps and Flow allow. Most brands do not need custom Functions on day one — they become relevant when your business logic is complex enough that no existing app or Flow workflow can handle it.

  • Do you work with existing Shopify Plus merchants?

    Yes. We work with brands that already have a Shopify Plus plan but need development work — checkout extensibility projects, B2B portal implementation, ERP integrations, speed optimisation, or a full theme rebuild. We can audit your current Plus setup and recommend priorities before scoping any development work.

  • Do you require a deposit?

    No. We work on a milestone payment model — you pay at agreed project checkpoints, only after reviewing and approving each deliverable. No deposit, no prepayment. This is our standard model for every project.

Client stories

4.9★ across Google, Clutch & Upwork. 100+ projects. 14 countries.

WebAnts built something better than I'd ever imagined — shipped faster than any agency I've worked with.

LaTisha Ebanks North Pointe Marketing

Dr. Nadish Ravindran

Founder · Elite Scholars

The team were methodical, fast and honest. Exactly what we needed. No surprises, just results.

Guillaume Etlin Bro Bread

We ranked #1 in three London postcodes within 90 days of launching with WebAnts. The ROI has been remarkable.

Ahmed Hassan Papa Doner

Rachel Piccoli

Founder & CEO · Humming Bliss Acres

WebAnts delivered our marketing site faster than any agency we'd worked with before. Clean build, great communication throughout.

Patrick Bishop ReRoute Americas

Incredible attention to detail. The site launched under budget and our leads doubled in the first month.

Tom Walker Access Super

Shopify that scales with you. →

Free discovery call. Flat quote. No deposit. No offshoring.

Book a free call

About WebAnts Shopify Plus Development London

WebAnts is a London Shopify Plus agency specialising in enterprise ecommerce development. We build Shopify Plus stores with custom checkout extensibility, B2B wholesale portals, multi-market via Shopify Markets, Shopify Flow automation, ERP and WMS integrations, custom Shopify Functions, and performance-optimised themes. We serve high-growth and enterprise brands across London and the UK. WebAnts is rated 4.9 stars on Google and 5.0 on Clutch. No deposit required. Milestone payments only.

Shopify Plus services: checkout extensibility, B2B portal, multi-market, Shopify Flow, ERP integration, Shopify Functions, metaobjects, Hydrogen headless, performance optimisation, migration from standard Shopify.