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eCommerce Fashion Marketplace Platform UK Multi-Brand Retailer

UK6 min readUpdated August 2025
Case Study
Region
UK
Contract
Fixed Price
Tech Stack
6
IP
100% transferred

Contents

Overview

A UK multi-brand fashion retailer with 340 independent designer brands, 2.4 million registered customers, and complex inventory management.

Tech Stack

Next.js App RouterReactShopify Plus Storefront APIStripe ConnectAWSRedis

Compliance Standards

UK Consumer Rights ActUK GDPRPCI DSS Level 1Distance Selling Regulations
Step 01Challenge

A UK multi-brand fashion retailer with 340 independent designer brands and 2.4 million customers needed a marketplace platform that could handle complex inventory management (multi-vendor, multi-warehouse), provide a seamless shopping experience, and automate payments and commissions while managing the complexity of 340 independent sellers with their own inventory, pricing, and fulfillment requirements.

Step 02Our Approach

Multi-Vendor Marketplace

Built a marketplace platform where 340 independent brands can manage their own inventory, pricing, and shipping.

Smart Inventory Management

Implemented real-time inventory sync across multiple warehouses and sellers with automated stock alerts.

Automated Payments & Commission

Integrated Stripe Connect for automated seller payouts, commission calculations, and tax handling.

Personalized Shopping Experience

Developed AI-powered product recommendations and personalized shopping journeys for 2.4M customers.

Mobile-First Design

Created a mobile-first responsive platform with 60% of users shopping on mobile devices.

Step 03Results
Platform launched in 22 weeks, £210,000 — on budget.
2.4M registered customers onboarded.
Average order value increased by 35%.
Seller satisfaction score: 94%.
Mobile conversion rate increased by 45%.
Annual GMV reached £48M.
Return rate reduced from 18% to 11%.

Client Testimonial

"

This platform has been a game-changer for our business. We've been able to onboard 340 brands, manage complex inventory across multiple warehouses, and provide a seamless experience for 2.4M customers. The automated payments and commission system has eliminated manual reconciliation work entirely.

Chief Operating Officer, UK Multi-Brand Fashion Retailer

ClickMasters Case Study Team

Reviewed by James Whitmore, CTO

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