Platform Audit
Review of your current store, data quality, apps, integrations and SEO.
Trusted by 150+ UK & International Retailers for Seamless Store Replatforming & Payment Setup
eCommerce Migration & Payment Gateway Integration in London
Move your online store to Shopify, WooCommerce or custom platforms safely without losing products, customers, orders or SEO rankings, while integrating world-class payment gateways.
London replatforming and payment integration specialists migrating stores to modern platforms with zero data loss, protected SEO and high-converting checkout flows.
SEO-safe replatforming & checkout engineering
Safe eCommerce migrations & frictionless payment integrations
Design Dev is a London agency helping UK retailers replatform their stores and integrate modern payment gateways. We combine rigorous data migration scripts, complete 301 SEO protection and flawless payment gateway integrations to safeguard your revenue.
01
Platform Migration Planning
A comprehensive replatforming roadmap covering product catalogues, customer accounts, order history and launch scheduling.
02
SEO & 301 Protection
Full URL mapping, 301 redirects and structured metadata transfer so your hard-earned Google rankings remain intact.
03
Payment Gateway Integration
Seamless integration of Stripe, PayPal, Klarna, Apple Pay, Google Pay and multi-currency routing.
04
Checkout UX & Dunning
Optimised checkout journeys, subscription vaulting, automated retry logic and ERP/accounting reconciliation.
A disciplined 5-step process from data audit to live payments
01
Store, Data & Payment Audit
We audit your current platform, catalogues, customer data, payment gateways and organic SEO footprint.
02
Replatforming & Gateway Architecture
Detailed schema mapping, gateway configuration plans, currency workflows and launch timelines.
03
Staging Build & Data Migration
New store built on staging while products, customers, orders and payment webhooks are securely configured.
04
Sandbox Testing & QA
Extensive sandbox testing of checkout flows, 3D Secure, partial refunds, redirects and speed benchmarking.
05
Launch & Revenue Monitoring
Zero-downtime cutover, DNS updates, live transaction validation and real-time SEO ranking monitoring.
Why replatforming and modern payments unlock eCommerce growth
Many UK retailers are held back by legacy platforms, high maintenance costs and clunky checkout steps that cause cart abandonment. Moving to modern platforms like Shopify, WooCommerce or custom stacks gives your brand the speed, stability and scalability needed to grow.
When combined with frictionless payment integrations like Stripe, Apple Pay and Klarna, your customers enjoy a fast, trustworthy checkout experience that increases conversion rates across mobile and desktop devices.
When combined with frictionless payment integrations like Stripe, Apple Pay and Klarna, your customers enjoy a fast, trustworthy checkout experience that increases conversion rates across mobile and desktop devices.
- Zero Data Loss
- Full SEO Protection
- Multi-Gateway Checkout
- Higher Conversions
Complete eCommerce migration & payment integration capabilities
Platform Recommendation
Magento to Shopify
WooCommerce Migration
Product Data Migration
Products, variants, images, categories, attributes and inventory levels.
Customer & Order Migration
Customer accounts, addresses, order history and loyalty data moved safely.
Stripe Integration
Stripe Checkout, Payment Element, Billing, Invoicing and Stripe Connect.
PayPal Integration
PayPal Checkout, Pay in 3, Venmo-ready flows and recurring PayPal payments.
Worldpay & Opayo
UK card processing for established merchants with hosted or direct checkout.
Klarna & Clearpay
Buy now, pay later options that lift average order value and conversions.
Apple Pay & Google Pay
One-tap wallet payments for faster, smoother checkout on mobile devices.
Open Banking Payments
Pay-by-bank payments with lower fees and instant settlement for UK customers.
Ready to move your store and upgrade your checkout?
Speak with our London eCommerce team about a smooth migration that protects your data, safeguards your rankings and delivers a seamless payment experience.
Migration & payment expertise across key industries
Hospitality & Leisure
Migrations for hospitality brands moving voucher shops, merchandise stores and online ordering to better platforms.
- Voucher data
- Order history
- Menu products
- Booking links
- Customer accounts
A London eCommerce engineering partner focused on revenue protection
Design Dev works with founders and eCommerce managers facing migrations and payment upgrades they cannot afford to get wrong. We combine data engineering, checkout UX expertise and deep platform experience to deliver smooth transitions.
Expect transparent timelines, complete URL mapping, strict security compliance and ongoing technical support that ensures your new store thrives.
Expect transparent timelines, complete URL mapping, strict security compliance and ongoing technical support that ensures your new store thrives.
150+
Projects delivered
5+
Years experience
UK+
London & worldwide
98%
Client retention
Technical precision, data integrity and payment security for UK eCommerce brands.
01
Protect Existing Revenue
Rankings, customer accounts and transaction history carried safely to your new platform.
02
Frictionless Payment UX
Fast checkout with Apple Pay, Google Pay, Klarna and multi-currency routing.
eCommerce & payment technologies we work with
Shopify
Shopify Plus
WooCommerce
OpenCart
Magento
Stripe
PayPal
Klarna
Apple Pay
Google Pay
MySQL
Screaming Frog
What clients say
Design Dev transformed our e-commerce platform. Their team was efficient, responsive, and delivered a stunning layout that doubled our conversion rate within a month.
Sarah Jenkins
Vauxhall Marketing - Shopify DevelopmentAn absolute pleasure to work with. They understood our brand identity perfectly and designed a clean, user-friendly SaaS platform that our clients love.
David Thorne
FluxGig - UI/UX DesignThe custom WordPress build is super fast and easy for our content editors to update. Outstanding attention to detail and SEO optimization.
Amara K.
Apsara Cosmetics - WordPress DevelopmentThey built a highly custom, secure medical inventory portal on-budget. Their engineering skills are top-tier.
Julian Reed
Upcycled Medical - Web App DevelopmentFrom logo creation to full visual guidelines, Design Dev gave our construction firm a modern and premium corporate look.
Emily Watson
Smart Build UK - Branding & DesignOur organic search traffic increased by 150% in three months. Their SEO team really knows their stuff.
Marcus Sterling
Supra Cycling - Search Engine OptimizationBrands we have worked with
eCommerce Migration & Payment FAQs
Common questions about replatforming your store and integrating secure payment gateways.
We migrate from Magento, WooCommerce, Shopify, BigCommerce, PrestaShop, OpenCart, Wix, Squarespace and custom platforms to Shopify, WooCommerce or a custom eCommerce platform.
Discuss your migration & payment integration
Tell us about your current store platform, catalogue size and checkout requirements. Our London team will provide a comprehensive migration plan and estimate.
Development Center
Sialkot, Pakistan
2nd Floor, Yousaf Plaza, Opposite Mazeeo Sadar Bazar, Sialkot Cantt
+92 337 4905 313Project enquiry
Fill in your details and we'll get back within 24 hours.